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Full vulnerability report · 2026
CVE-2026-32287High confidence

Infinite loop in github.com/antchfx/xpath

github.com/antchfx/xpath · github.com/antchfx/xpath

7.5HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 30 Mar 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.69% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs github.com/antchfx/xpath github.com/antchfx/xpath and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 2 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcegolang-github-antchfx-xpathAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 7 Oct 2026
Debian bookwormbookworm · sourcegolang-github-antchfx-xpathAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 7 Oct 2026
Debian forkyforky · sourcegolang-github-antchfx-xpathVendor fix publishedDebian records a fixed source-package version for this release.1.3.6-1Debian Security Tracker ↗Source updated 7 Oct 2026
Debian sidsid · sourcegolang-github-antchfx-xpathVendor fix publishedDebian records a fixed source-package version for this release.1.3.6-1Debian Security Tracker ↗Source updated 7 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivegolang-github-antchfx-xpathUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 6 Oct 2026
Open-source package ranges2 source-attributed ranges

These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.

Ecosystem and packageAffected rangeFirst fixed versionEvidence
Gogithub.com/antchfx/xpathSEMVER: introduced 0; fixed 1.3.61.3.6OSV record ↗aggregator derived · 10 Sep 2026
gogithub.com/antchfx/xpath< 1.3.61.3.6GitHub advisory ↗github reviewed aggregator · 30 Mar 2026
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-2026-32287 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitygithub.com/antchfx/xpath: github.com/antchfx/xpath: Denial of Service due to infinite loop via boolean XPath expressions
23 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • compliance/openshift-compliance-operator-bundle as a component of Compliance Operator
  • compliance/openshift-compliance-rhel8-operator as a component of Compliance Operator
  • compliance/openshift-compliance-must-gather-rhel8 as a component of File Integrity Operator
  • compliance/openshift-compliance-openscap-rhel8 as a component of File Integrity Operator
  • compliance/openshift-compliance-operator-bundle as a component of File Integrity Operator
  • compliance/openshift-compliance-rhel8-operator as a component of File Integrity Operator
  • mta/mta-cli-rhel9 as a component of Migration Toolkit for Applications 8
  • mta/mta-dotnet-external-provider-rhel8 as a component of Migration Toolkit for Applications 8
  • mta/mta-dotnet-external-provider-rhel9 as a component of Migration Toolkit for Applications 8
  • mta/mta-generic-external-provider-rhel9 as a component of Migration Toolkit for Applications 8
  • mta/mta-java-external-provider-rhel9 as a component of Migration Toolkit for Applications 8
  • mta/mta-solution-server-rhel9 as a component of Migration Toolkit for Applications 8
Summary
A flaw was found in github.com/antchfx/xpath. An attacker could exploit this vulnerability by providing specially crafted boolean XPath expressions that evaluate to true. This can cause an infinite loop within the logicalQuery.Select function, leading to 100% CPU utilization. The consequence is a Denial of Service (DoS) condition, making the affected system unresponsive.
Remediation
For details on how to apply this update, refer to: https://docs.redhat.com/en/documentation/openshift_container_platform/latest/html/operators/administrator-tasks#olm-upgrading-operators
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

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-2026-16349

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 actionPatch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 2 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

Boolean XPath expressions that evaluate to true can cause an infinite loop in logicalQuery.Select, leading to 100% CPU usage. This can be triggered by top-level selectors such as "1=1" or "true()".

What

Boolean XPath expressions that evaluate to true can cause an infinite loop in logicalQuery.Select, leading to 100% CPU usage. This can be triggered by top-level selectors such as "1=1" or "true()".

Why

A malformed condition prevents a loop from making progress or terminating, allowing resource exhaustion.

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

Boolean XPath expressions that evaluate to true can cause an infinite loop in logicalQuery.Select, leading to 100% CPU usage. This can be triggered by top-level selectors such as "1=1" or "true()".

Why

A malformed condition prevents a loop from making progress or terminating, allowing resource exhaustion.

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.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Loop with Unreachable Exit Condition ('Infinite Loop') → 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-835 ↗

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop'). The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

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-835Public exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

Cyber Security Agency of Singapore · English · CSA-SB-20260401Security Bulletin 01 Apr 2026

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 01 Apr 2026, published on 1 April 2026. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0888Multiples vulnérabilités dans les produits Splunk

d?id=CVE-2026-27144 Référence CVE CVE-2026-28388 https://www.cve.org/CVERecord?id=CVE-2026-28388 Référence CVE CVE-2026-28389 https://www.cve.org/CVERecord?id=CVE-2026-28389 Référence CVE CVE-2026-28390 https://www.cve.org/CVERecord?id=CVE-2026-28390 Référence CVE CVE-2026-29181 https://www.cve.org/CVERecord?id=CVE-2026-29181 Référence CVE CVE-2026-32280 https://www.cve.org/CVERecord?id=CVE-2026-32280 Référence CVE CVE-2026-32281 https://www.cve.org/CVERecord?id=CVE-2026-32281 Référence CVE CVE-2026-32283 https://www.cve.org/CVERecord?id=CVE-2026-32283 Référence CVE CVE-2026-32285 https://www.cve.org/CVERecord?id=CVE-2026-32285 Référence CVE CVE-2026-32287 https://www.cve.org/CVERecord?id=CVE-2026-32287 Référence CVE CVE-2026-34986 https://www.cve.org/CVERecord?id=CVE-2026-34986 Référence CVE CVE-2026-39836 https://www.cve.org/CVERecord?id=CVE-2026-39836 Référence CVE CVE-2026-39882 https://www.cve.org/CVERecord?id=CVE-2026-39882 Référence CVE CVE-2026-39883 https://www.cve.org/CVERecord?id=CVE-2026-39883 Référence CVE CVE-2026-42501 https://www.cve.org/CVERecord?id=CVE-2026-42501 Référence CVE CVE-2026-6914 https://www.cve.org/CVERecord?id=CVE-2026-6914 Référence CVE CVE-2026-6915 https://www.cve.org/CVERecord?id=CVE-2026-6915 Référence CVE CVE-2026-8053 https://www.cve.org/CVERecord?id=CVE-2

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-012204antchfxのXpathにおける無限ループに関する脆弱性

trueと評価されるブールXPath式は、logicalQuery.Selectで無限ループを引き起こし、CPU使用率が100%に達する可能性があります。これは「1=1」や「true()」のようなトップレベルセレクターが原因となります。

Official advisory ↗
03

Patch and workaround

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.
Fix availability varies by product
Affected
Fixed
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
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 30 Mar 2026, 14:55 UTC · CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
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-2026-16349
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.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 1.3.6 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    < 1.3.6 · Fixed: For details on how to apply this update, refer to: https://docs.redhat.com/en/documentation/openshift_container_platform/latest/html/operators/administrator-tasks#olm-upgrading-operators
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    compliance/openshift-compliance-operator-bundle as a component of Compliance Operator; compliance/openshift-compliance-rhel8-operator as a component of Compliance Operator; compliance/openshift-compliance-must-gather-rhel8 as a component of File Integrity Operator; compliance/openshift-compliance-openscap-rhel8 as a component of File Integrity Operator; compliance/openshift-compliance-operator-bundle as a component of File Integrity Operator; compliance/openshift-compliance-rhel8-operator as a component of File Integrity Operator; mta/mta-cli-rhel9 as a component of Migration Toolkit for Applications 8; mta/mta-dotnet-external-provider-rhel8 as a component of Migration Toolkit for Applications 8; mta/mta-dotnet-external-provider-rhel9 as a component of Migration Toolkit for Applications 8; mta/mta-generic-external-provider-rhel9 as a component of Migration Toolkit for Applications 8; mta/mta-java-external-provider-rhel9 as a component of Migration Toolkit for Applications 8; mta/mta-solution-server-rhel9 as a component of Migration Toolkit for Applications 8; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; opentelemetry-collector as a component of Red Hat Enterprise Linux 10; opentelemetry-collector.src as a component of Red Hat Enterprise Linux 10; opentelemetry-collector as a component of Red Hat Enterprise Linux 9; opentelemetry-collector.src as a component of Red Hat Enterprise Linux 9; compliance/openshift-compliance-must-gather-rhel8 as a component of Red Hat OpenShift Container Platform 4; compliance/openshift-compliance-openscap-rhel8 as a component of Red Hat OpenShift Container Platform 4; compliance/openshift-compliance-rhel8-operator as a component of Red Hat OpenShift Container Platform 4; rhosdt/tempo-jaeger-query-rhel9 as a component of Red Hat OpenShift distributed tracing 3; rhosdt/tempo-query-rhel9 as a component of Red Hat OpenShift distributed tracing 3; rhosdt/tempo-rhel9 as a component of Red Hat OpenShift distributed tracing 3 · Fixed: registry.redhat.io/rhosdt/opentelemetry-collector-rhel9@sha256:0174a3a6a65cac3b13423b903c9038baaa37c6c3d6dbeee9918c5f576b4f5d7d_ppc64le as a component of Red Hat OpenShift distributed tracing 3.9.1; registry.redhat.io/rhosdt/opentelemetry-collector-rhel9@sha256:7c84cdf31817fe4584a5e8a1589f4c0f09f22aed8f75e6d694143c6a6065d330_amd64 as a component of Red Hat OpenShift distributed tracing 3.9.1; registry.redhat.io/rhosdt/opentelemetry-collector-rhel9@sha256:9ef57417e79d78ca1a623357b5a58c384fdf3a2c954c3587b76cce8983a725e4_s390x as a component of Red Hat OpenShift distributed tracing 3.9.1; registry.redhat.io/rhosdt/opentelemetry-collector-rhel9@sha256:ff8b32e89a8550c5fac876f5869df8e93ba99b44e49d079a3375f638bc47dfd6_arm64 as a component of Red Hat OpenShift distributed tracing 3.9.1
    After
    compliance/openshift-compliance-operator-bundle as a component of Compliance Operator; compliance/openshift-compliance-rhel8-operator as a component of Compliance Operator; compliance/openshift-compliance-must-gather-rhel8 as a component of File Integrity Operator; compliance/openshift-compliance-openscap-rhel8 as a component of File Integrity Operator; compliance/openshift-compliance-operator-bundle as a component of File Integrity Operator; compliance/openshift-compliance-rhel8-operator as a component of File Integrity Operator; mta/mta-cli-rhel9 as a component of Migration Toolkit for Applications 8; mta/mta-dotnet-external-provider-rhel8 as a component of Migration Toolkit for Applications 8; mta/mta-dotnet-external-provider-rhel9 as a component of Migration Toolkit for Applications 8; mta/mta-generic-external-provider-rhel9 as a component of Migration Toolkit for Applications 8; mta/mta-java-external-provider-rhel9 as a component of Migration Toolkit for Applications 8; mta/mta-solution-server-rhel9 as a component of Migration Toolkit for Applications 8; rhacm2/acm-grafana-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; opentelemetry-collector as a component of Red Hat Enterprise Linux 10; opentelemetry-collector.src as a component of Red Hat Enterprise Linux 10; opentelemetry-collector as a component of Red Hat Enterprise Linux 9; opentelemetry-collector.src as a component of Red Hat Enterprise Linux 9; compliance/openshift-compliance-must-gather-rhel8 as a component of Red Hat OpenShift Container Platform 4; compliance/openshift-compliance-openscap-rhel8 as a component of Red Hat OpenShift Container Platform 4; compliance/openshift-compliance-rhel8-operator as a component of Red Hat OpenShift Container Platform 4; rhosdt/tempo-jaeger-query-rhel9 as a component of Red Hat OpenShift distributed tracing 3; rhosdt/tempo-query-rhel9 as a component of Red Hat OpenShift distributed tracing 3; rhosdt/tempo-rhel9 as a component of Red Hat OpenShift distributed tracing 3 · Fixed: registry.redhat.io/rhosdt/opentelemetry-collector-rhel9@sha256:0174a3a6a65cac3b13423b903c9038baaa37c6c3d6dbeee9918c5f576b4f5d7d_ppc64le as a component of Red Hat OpenShift distributed tracing 3.9.3; registry.redhat.io/rhosdt/opentelemetry-collector-rhel9@sha256:7c84cdf31817fe4584a5e8a1589f4c0f09f22aed8f75e6d694143c6a6065d330_amd64 as a component of Red Hat OpenShift distributed tracing 3.9.3; registry.redhat.io/rhosdt/opentelemetry-collector-rhel9@sha256:9ef57417e79d78ca1a623357b5a58c384fdf3a2c954c3587b76cce8983a725e4_s390x as a component of Red Hat OpenShift distributed tracing 3.9.3; registry.redhat.io/rhosdt/opentelemetry-collector-rhel9@sha256:ff8b32e89a8550c5fac876f5869df8e93ba99b44e49d079a3375f638bc47dfd6_arm64 as a component of Red Hat OpenShift distributed tracing 3.9.3
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
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.
Free version - for non-commercial use only.CVE-2026-32287 · cve.blacktree.nl