path-to-regexp vulnerable to Regular Expression Denial of Service via multiple route parameters
path-to-regexp · path-to-regexp
7.5HighCVSS 3.1
Recommended action
Within 7 days
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Patch available
Direct vendor intelligence
Authoritative vendor CSAF and VEX advisories
Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.
1 current
CVE-2026-4867 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitypath-to-regexp: path-to-regexp: Denial of Service via catastrophic backtracking from malformed URL parameters
102 known affected
The vendor explicitly identifies these products as affected by this CVE.
cryostat/cryostat-openshift-console-plugin-rhel9 as a component of Cryostat 4
path-to-regexp as a component of Cryostat 4
openshift-logging/elasticsearch-operator-bundle as a component of Logging Subsystem for Red Hat OpenShift
openshift-logging/elasticsearch-proxy-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
openshift-logging/elasticsearch-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift
openshift-logging/elasticsearch6-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift
openshift-logging/logging-curator5-rhel9 as a component of Logging Subsystem for Red Hat OpenShift
mta/mta-ui-rhel9 as a component of Migration Toolkit for Applications 8
migration-toolkit-virtualization/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization
mtv-candidate/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization
multicluster-engine/console-mce-rhel9 as a component of Multicluster Engine for Kubernetes
Summary
A flaw was found in path-to-regexp. A remote attacker could exploit this vulnerability by crafting a malicious URL with three or more parameters in a single segment, separated by non-period characters. This causes the component to generate a bad regular expression, leading to catastrophic backtracking. The overlapping capture groups can consume excessive processing resources, resulting in a Denial of Service (DoS) for the affected application.
Remediation
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Optional official sources
National CERT insights ?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.
Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.
Official European source
ENISA European Vulnerability Database
Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.
1 current
ENISA EUVD identifier
EUVD-2026-16273
No EUVD known-exploited evidence
ENISA has published the identifier mapping but no EUVD description has been stored yet.
EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days
High technical severity; prioritise exposed affected systems while verifying vendor guidance.
Patch available
01
What, why and how
Impact:
A bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period (.). For example, /:a-:b-:c or /:a-:b-:c-:d. The backtrack protection added in path-to-regexp@0.1.12 only prevents ambiguity for two parameters. With three or more, the generated lookahead does not block single separator characters, so capture groups overlap and cause catastrophic backtracking.
Patches:
Upgrade to path-to-regexp@0.1.13
Custom regex patterns in route definitions (e.g., /:a-:b([^-/]+)-:c([^-/]+)) are not affected because they override the default capture group.
Workarounds:
All versions can be patched by providing a custom regular expression for parameters after the first in a single segment. As long as the custom regular expression does not match the text before the parameter, you will be safe. For example, change /:a-:b-:c to /:a-:b([^-/]+)-:c([^-/]+).
If paths cannot be rewritten and versions cannot be upgraded, another alternative is to limit the URL length.
What
Impact:
A bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period (.). For example, /:a-:b-:c or /:a-:b-:c-:d. The backtrack protection added in path-to-regexp@0.1.12 only prevents ambiguity for two parameters. With three or more, the generated lookahead does not block single separator characters, so capture groups overlap and cause catastrophic backtracking.
Patches:
Upgrade to path-to-regexp@0.1.13
Custom regex patterns in route definitions (e.g., /:a-:b([^-/]+)-:c([^-/]+)) are not affected because they override the default capture group.
Workarounds:
All versions can be patched by providing a custom regular expression for parameters after the first in a single segment. As long as the custom regular expression does not match the text before the parameter, you will be safe. For example, change /:a-:b-:c to /:a-:b([^-/]+)-:c([^-/]+).
If paths cannot be rewritten and versions cannot be upgraded, another alternative is to limit the URL length.
Why
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
What
Impact:
A bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period (.). For example, /:a-:b-:c or /:a-:b-:c-:d. The backtrack protection added in path-to-regexp@0.1.12 only prevents ambiguity for two parameters. With three or more, the generated lookahead does not block single separator characters, so capture groups overlap and cause catastrophic backtracking.
Patches:
Upgrade to path-to-regexp@0.1.13
Custom regex patterns in route definitions (e.g., /:a-:b([^-/]+)-:c([^-/]+)) are not affected because they override the default capture group.
Workarounds:
All versions can be patched by providing a custom regular expression for parameters after the first in a single segment. As long as the custom regular expression does not match the text before the parameter, you will be safe. For example, change /:a-:b-:c to /:a-:b([^-/]+)-:c([^-/]+).
If paths cannot be rewritten and versions cannot be upgraded, another alternative is to limit the URL length.
Why
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No confirmed evidence
No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material ?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.None recorded
No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
Likely attack path
a network path → Inefficient Regular Expression Complexity → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness ?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-1333: Inefficient Regular Expression Complexity. The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
CVSS vector ?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-1333
A
Official authority intelligence
Only matched European and national findings are included. Language selectors and unavailable sources are omitted.
ENISA EUVD · EUVD-2026-16273Official EUVD mapping
0 linked advisory records.
Official EUVD recordCERT-FR · French · CERTFR-2026-AVI-0958Multiples vulnérabilités dans les produits IBM
Official advisoryCERT-FR · French · CERTFR-2026-AVI-0581Multiples vulnérabilités dans MongoDB
De multiples vulnérabilités ont été découvertes dans MongoDB. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance et un problème de sécurité non spécifié par l'éditeur.
Operational remediation based on structured source evidence.
Status ?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
cryostat/cryostat-openshift-console-plugin-rhel9 as a component of Cryostat 4; path-to-regexp as a component of Cryostat 4; openshift-logging/elasticsearch-operator-bundle as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch-proxy-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch6-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/logging-curator5-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; mta/mta-ui-rhel9 as a component of Migration Toolkit for Applications 8; migration-toolkit-virtualization/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization; mtv-candidate/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization; multicluster-engine/console-mce-rhel9 as a component of Multicluster Engine for Kubernetes; network-observability/network-observability-console-plugin-rhel9 as a component of Network Observability Operator; openshift-lightspeed/lightspeed-console-plugin-pf5-rhel9 as a component of OpenShift Lightspeed; openshift-lightspeed/lightspeed-console-plugin-rhel9 as a component of OpenShift Lightspeed; openshift-pipelines/pipelines-console-plugin-rhel8 as a component of OpenShift Pipelines; openshift-pipelines/pipelines-console-plugin-rhel9 as a component of OpenShift Pipelines; openshift-service-mesh/kiali-ossmc-rhel8 as a component of OpenShift Service Mesh 2; openshift-service-mesh/kiali-rhel8 as a component of OpenShift Service Mesh 2; openshift-service-mesh/kiali-operator-bundle as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-ossmc-rhel9 as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-rhel9 as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-rhel9-operator as a component of OpenShift Service Mesh 3; rhacm2/console-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; advanced-cluster-security/rhacs-main-rhel8 as a component of Red Hat Advanced Cluster Security 4; amq7-tech-preview/amq-broker-jolokia-api-server-rhel9 as a component of Red Hat AMQ Broker 7; path-to-regexp as a component of Red Hat AMQ Broker 7; ansible-automation-platform-26/gateway-rhel9 as a component of Red Hat Ansible Automation Platform 2; ansible-automation-platform-tech-preview/mcp-server-rhel9 as a component of Red Hat Ansible Automation Platform 2; automation-controller.src as a component of Red Hat Ansible Automation Platform 2; and 72 more
Fixed
registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:1a883d0526f205beab9dfc51c5ac32b6a494dd950465b319076bf3a72e05e798_s390x as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:2ef62503cd347fba4ae4e9fe659a39fd7ceeb6be9b29ac8c1a1071f378ad7fbc_ppc64le as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:841c0c2af089daa79d66d73da42e9b7f1880db3ee27a1160e8e2f230f125c9f4_amd64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:91568609093559b57722d4125b472a815fabb79888a56ac5e444d34a90c5f944_arm64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:03182e8c0d9a28dd8dab831b3740bb588fd8d03f6783d24c492e53e52df5613d_arm64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:2d882541f78495cb6ab25932d03947e038d5e477d878210e506dffcd787d201b_s390x as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:ccce0a754cefa59c426bea1b1c8c345487a1cd35d147f50d8c2c881401b9ea7c_ppc64le as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:cdd84d0f5e4fbe28071182219185e2dc5a1f478c48a14eb2a34ef9dc8d75dc96_amd64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:6f053e36d5ef57ba6d04f036a55800097264d9a5cac5dd96198b7afafa8cb93f_amd64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:8c22f14eb3db715badfbe34e86fee590ac4435095db4f359d555360abde376cc_arm64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:935e17334aec23c168cd36ca6dd83ee5710ed44caa38247b759d1778298e2bad_ppc64le as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:aa84b143c1e0e4ca0186c75bf1e46b4cfdbdd7cdfaee4acdcb6bffe697b6aa0f_s390x as a component of Cluster Observability Operator 1.5.0
Action
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 26 Mar 2026 · Last source change 26 Mar 2026, 16:52 UTC · CWE-1333 · Inefficient Regular Expression Complexity
CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source ?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-16273
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched
Core structured fields are present and their contributing authorities are shown above.
Affected versionsThe structured affected or fixed version information changed.
Before
cryostat/cryostat-openshift-console-plugin-rhel9 as a component of Cryostat 4; path-to-regexp as a component of Cryostat 4; openshift-logging/elasticsearch-operator-bundle as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch-proxy-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch6-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/logging-curator5-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; mta/mta-ui-rhel9 as a component of Migration Toolkit for Applications 8; migration-toolkit-virtualization/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization; mtv-candidate/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization; multicluster-engine/console-mce-rhel9 as a component of Multicluster Engine for Kubernetes; network-observability/network-observability-console-plugin-rhel9 as a component of Network Observability Operator; openshift-lightspeed/lightspeed-console-plugin-pf5-rhel9 as a component of OpenShift Lightspeed; openshift-lightspeed/lightspeed-console-plugin-rhel9 as a component of OpenShift Lightspeed; openshift-pipelines/pipelines-console-plugin-rhel8 as a component of OpenShift Pipelines; openshift-pipelines/pipelines-console-plugin-rhel9 as a component of OpenShift Pipelines; openshift-service-mesh/kiali-ossmc-rhel8 as a component of OpenShift Service Mesh 2; openshift-service-mesh/kiali-rhel8 as a component of OpenShift Service Mesh 2; openshift-service-mesh/kiali-operator-bundle as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-ossmc-rhel9 as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-rhel9 as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-rhel9-operator as a component of OpenShift Service Mesh 3; rhacm2/console-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; advanced-cluster-security/rhacs-main-rhel8 as a component of Red Hat Advanced Cluster Security 4; amq7-tech-preview/amq-broker-jolokia-api-server-rhel9 as a component of Red Hat AMQ Broker 7; path-to-regexp as a component of Red Hat AMQ Broker 7; ansible-automation-platform-26/gateway-rhel9 as a component of Red Hat Ansible Automation Platform 2; ansible-automation-platform-tech-preview/mcp-server-rhel9 as a component of Red Hat Ansible Automation Platform 2; automation-controller.src as a component of Red Hat Ansible Automation Platform 2; and 72 more · Fixed: registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:1a883d0526f205beab9dfc51c5ac32b6a494dd950465b319076bf3a72e05e798_s390x as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:2ef62503cd347fba4ae4e9fe659a39fd7ceeb6be9b29ac8c1a1071f378ad7fbc_ppc64le as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:841c0c2af089daa79d66d73da42e9b7f1880db3ee27a1160e8e2f230f125c9f4_amd64 as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:91568609093559b57722d4125b472a815fabb79888a56ac5e444d34a90c5f944_arm64 as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:03182e8c0d9a28dd8dab831b3740bb588fd8d03f6783d24c492e53e52df5613d_arm64 as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:2d882541f78495cb6ab25932d03947e038d5e477d878210e506dffcd787d201b_s390x as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:ccce0a754cefa59c426bea1b1c8c345487a1cd35d147f50d8c2c881401b9ea7c_ppc64le as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:cdd84d0f5e4fbe28071182219185e2dc5a1f478c48a14eb2a34ef9dc8d75dc96_amd64 as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:6f053e36d5ef57ba6d04f036a55800097264d9a5cac5dd96198b7afafa8cb93f_amd64 as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:8c22f14eb3db715badfbe34e86fee590ac4435095db4f359d555360abde376cc_arm64 as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:935e17334aec23c168cd36ca6dd83ee5710ed44caa38247b759d1778298e2bad_ppc64le as a component of Cluster Observability Operator 1.5.2; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:aa84b143c1e0e4ca0186c75bf1e46b4cfdbdd7cdfaee4acdcb6bffe697b6aa0f_s390x as a component of Cluster Observability Operator 1.5.2
After
cryostat/cryostat-openshift-console-plugin-rhel9 as a component of Cryostat 4; path-to-regexp as a component of Cryostat 4; openshift-logging/elasticsearch-operator-bundle as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch-proxy-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch-rhel9-operator as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/elasticsearch6-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/kibana6-rhel8 as a component of Logging Subsystem for Red Hat OpenShift; openshift-logging/logging-curator5-rhel9 as a component of Logging Subsystem for Red Hat OpenShift; mta/mta-ui-rhel9 as a component of Migration Toolkit for Applications 8; migration-toolkit-virtualization/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization; mtv-candidate/mtv-console-plugin-rhel9 as a component of Migration Toolkit for Virtualization; multicluster-engine/console-mce-rhel9 as a component of Multicluster Engine for Kubernetes; network-observability/network-observability-console-plugin-rhel9 as a component of Network Observability Operator; openshift-lightspeed/lightspeed-console-plugin-pf5-rhel9 as a component of OpenShift Lightspeed; openshift-lightspeed/lightspeed-console-plugin-rhel9 as a component of OpenShift Lightspeed; openshift-pipelines/pipelines-console-plugin-rhel8 as a component of OpenShift Pipelines; openshift-pipelines/pipelines-console-plugin-rhel9 as a component of OpenShift Pipelines; openshift-service-mesh/kiali-ossmc-rhel8 as a component of OpenShift Service Mesh 2; openshift-service-mesh/kiali-rhel8 as a component of OpenShift Service Mesh 2; openshift-service-mesh/kiali-operator-bundle as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-ossmc-rhel9 as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-rhel9 as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-rhel9-operator as a component of OpenShift Service Mesh 3; rhacm2/console-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; advanced-cluster-security/rhacs-main-rhel8 as a component of Red Hat Advanced Cluster Security 4; amq7-tech-preview/amq-broker-jolokia-api-server-rhel9 as a component of Red Hat AMQ Broker 7; path-to-regexp as a component of Red Hat AMQ Broker 7; ansible-automation-platform-26/gateway-rhel9 as a component of Red Hat Ansible Automation Platform 2; ansible-automation-platform-tech-preview/mcp-server-rhel9 as a component of Red Hat Ansible Automation Platform 2; automation-controller.src as a component of Red Hat Ansible Automation Platform 2; and 72 more · Fixed: registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:1a883d0526f205beab9dfc51c5ac32b6a494dd950465b319076bf3a72e05e798_s390x as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:2ef62503cd347fba4ae4e9fe659a39fd7ceeb6be9b29ac8c1a1071f378ad7fbc_ppc64le as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:841c0c2af089daa79d66d73da42e9b7f1880db3ee27a1160e8e2f230f125c9f4_amd64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf4-rhel9@sha256:91568609093559b57722d4125b472a815fabb79888a56ac5e444d34a90c5f944_arm64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:03182e8c0d9a28dd8dab831b3740bb588fd8d03f6783d24c492e53e52df5613d_arm64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:2d882541f78495cb6ab25932d03947e038d5e477d878210e506dffcd787d201b_s390x as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:ccce0a754cefa59c426bea1b1c8c345487a1cd35d147f50d8c2c881401b9ea7c_ppc64le as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/logging-console-plugin-pf5-rhel9@sha256:cdd84d0f5e4fbe28071182219185e2dc5a1f478c48a14eb2a34ef9dc8d75dc96_amd64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:6f053e36d5ef57ba6d04f036a55800097264d9a5cac5dd96198b7afafa8cb93f_amd64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:8c22f14eb3db715badfbe34e86fee590ac4435095db4f359d555360abde376cc_arm64 as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:935e17334aec23c168cd36ca6dd83ee5710ed44caa38247b759d1778298e2bad_ppc64le as a component of Cluster Observability Operator 1.5.0; registry.redhat.io/cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9@sha256:aa84b143c1e0e4ca0186c75bf1e46b4cfdbdd7cdfaee4acdcb6bffe697b6aa0f_s390x as a component of Cluster Observability Operator 1.5.0
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
CVE-2026-4867: path-to-regexp vulnerable to Regular Expression Denial of Service via multiple route parameters | BlackTree
