BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2026
CVE-2026-89058High confidence

Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildcard config

Red Hat · Red Hat build of Apache Camel 4 for Quarkus 3

7.4HighCVSS 3.1
Recommended action
Within 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 18 Sep 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • EPSS is 0.23% for the current model date.

Compensating controls

  • 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 Red Hat Red Hat build of Apache Camel 4 for Quarkus 3 and falls inside the recorded affected range.
  2. Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
  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.

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.

7 package states
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 · sourceresteasy3.0Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 10 Oct 2026
Debian bookwormbookworm · sourceresteasy3.0Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 10 Oct 2026
Debian forkyforky · sourceresteasy3.0Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 10 Oct 2026
Debian sidsid · sourceresteasyAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 10 Oct 2026
Debian sidsid · sourceresteasy3.0Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 10 Oct 2026
Ubuntu 24.04 LTSnoble · esm-appsresteasyUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 9 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveresteasy3.0Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 9 Oct 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-2026-89058 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityresteasy-core: RESTEasy: CorsFilter Reflects Arbitrary Origin with Credentials under Wildcard Config
88 known affected

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

  • resteasy-core as a component of Red Hat build of Apache Camel 4 for Quarkus 3
  • resteasy-core as a component of Red Hat build of Apicurio Registry 3
  • resteasy-core as a component of Red Hat build of Debezium 3
  • resteasy-core as a component of Red Hat Build of Keycloak
  • rhbk/keycloak-rhel9-operator as a component of Red Hat Build of Keycloak
  • resteasy-core as a component of Red Hat build of Quarkus
  • redhat-pki:10/redhat-pki.src as a component of Red Hat Certificate System 10
  • redhat-pki.src as a component of Red Hat Certificate System 11
  • dogtag-pki.src as a component of Red Hat Enterprise Linux 10
  • idm-pki-acme as a component of Red Hat Enterprise Linux 10
  • idm-pki-base as a component of Red Hat Enterprise Linux 10
  • idm-pki-ca as a component of Red Hat Enterprise Linux 10
Summary
A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.
Remediation
Fix deferred
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-2026-82736

No EUVD known-exploited evidence

A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.

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
7.4 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.

What

A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.

Why

The product does not properly verify that the source of data or communication is valid.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.

Why

The product does not properly verify that the source of data or communication is valid.

How

An attacker operating through a network path may attempt exploitation without authentication after a 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

CISA Vulnrichment records proof-of-concept exploitation in its SSVC data. BlackTree has not independently executed or validated exploit material.

Likely attack path
a network path → Origin Validation Error → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-346 ↗

CWE-346: Origin Validation Error. The product does not properly verify that the source of data or communication is valid.

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:R/S:C/C:H/I:N/A:N

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.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SChangedScope: The attack can affect a component governed by a different security authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
Stolen credentials, tokens and legitimate administration functions may provide continued access without deploying a large custom toolset.
NetworkUnauthenticatedCWE-346Public exploit reference
A

Official authority intelligence

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

ENISA EUVD · EUVD-2026-82736Official EUVD mapping

A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins ("*"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.

Official EUVD record ↗
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 not verified
Affected
  • resteasy-core as a component of Red Hat build of Apache Camel 4 for Quarkus 3
  • resteasy-core as a component of Red Hat build of Apicurio Registry 3
  • resteasy-core as a component of Red Hat build of Debezium 3
  • resteasy-core as a component of Red Hat Build of Keycloak
  • rhbk/keycloak-rhel9-operator as a component of Red Hat Build of Keycloak
  • resteasy-core as a component of Red Hat build of Quarkus
  • redhat-pki:10/redhat-pki.src as a component of Red Hat Certificate System 10
  • redhat-pki.src as a component of Red Hat Certificate System 11
  • dogtag-pki.src as a component of Red Hat Enterprise Linux 10
  • idm-pki-acme as a component of Red Hat Enterprise Linux 10
  • idm-pki-base as a component of Red Hat Enterprise Linux 10
  • idm-pki-ca as a component of Red Hat Enterprise Linux 10
  • idm-pki-java as a component of Red Hat Enterprise Linux 10
  • idm-pki-kra as a component of Red Hat Enterprise Linux 10
  • idm-pki-server as a component of Red Hat Enterprise Linux 10
  • idm-pki-tools as a component of Red Hat Enterprise Linux 10
  • python3-idm-pki as a component of Red Hat Enterprise Linux 10
  • idm-jss-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-jss (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-ldapjdk-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-ldapjdk (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-pki-acme (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-pki-base-java (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-pki-base (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-pki-ca (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-pki-kra (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-pki-server (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-pki-symkey (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-pki-tools (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • idm-tomcatjss (pki-core:10.6) as a component of Red Hat Enterprise Linux 8
  • and 58 more
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
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 18 Sept 2026 · Last source change 9 Oct 2026, 13:26 UTC · CWE-346 · Origin Validation Error

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 2026-09-18
European sourceENISA EUVD · EUVD-2026-82736
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD awaiting enrichment

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
    resteasy-core as a component of Red Hat build of Apache Camel 4 for Quarkus 3; resteasy-core as a component of Red Hat build of Apicurio Registry 3; resteasy-core as a component of Red Hat build of Debezium 3; resteasy-core as a component of Red Hat Build of Keycloak; rhbk/keycloak-rhel9-operator as a component of Red Hat Build of Keycloak; resteasy-core as a component of Red Hat build of Quarkus; redhat-pki:10/redhat-pki.src as a component of Red Hat Certificate System 10; redhat-pki.src as a component of Red Hat Certificate System 11; dogtag-pki.src as a component of Red Hat Enterprise Linux 10; idm-pki-acme as a component of Red Hat Enterprise Linux 10; idm-pki-base as a component of Red Hat Enterprise Linux 10; idm-pki-ca as a component of Red Hat Enterprise Linux 10; idm-pki-java as a component of Red Hat Enterprise Linux 10; idm-pki-kra as a component of Red Hat Enterprise Linux 10; idm-pki-server as a component of Red Hat Enterprise Linux 10; idm-pki-tools as a component of Red Hat Enterprise Linux 10; python3-idm-pki as a component of Red Hat Enterprise Linux 10; idm-jss-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-jss (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-ldapjdk-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-ldapjdk (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-acme (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-base-java (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-base (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-ca (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-kra (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-server (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-symkey (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-tools (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-tomcatjss (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; and 61 more
    After
    resteasy-core as a component of Red Hat build of Apache Camel 4 for Quarkus 3; resteasy-core as a component of Red Hat build of Apicurio Registry 3; resteasy-core as a component of Red Hat build of Debezium 3; resteasy-core as a component of Red Hat Build of Keycloak; rhbk/keycloak-rhel9-operator as a component of Red Hat Build of Keycloak; resteasy-core as a component of Red Hat build of Quarkus; redhat-pki:10/redhat-pki.src as a component of Red Hat Certificate System 10; redhat-pki.src as a component of Red Hat Certificate System 11; dogtag-pki.src as a component of Red Hat Enterprise Linux 10; idm-pki-acme as a component of Red Hat Enterprise Linux 10; idm-pki-base as a component of Red Hat Enterprise Linux 10; idm-pki-ca as a component of Red Hat Enterprise Linux 10; idm-pki-java as a component of Red Hat Enterprise Linux 10; idm-pki-kra as a component of Red Hat Enterprise Linux 10; idm-pki-server as a component of Red Hat Enterprise Linux 10; idm-pki-tools as a component of Red Hat Enterprise Linux 10; python3-idm-pki as a component of Red Hat Enterprise Linux 10; idm-jss-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-jss (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-ldapjdk-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-ldapjdk (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-acme (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-base-java (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-base (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-ca (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-kra (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-server (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-symkey (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-tools (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-tomcatjss (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; and 58 more
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    resteasy-core as a component of Red Hat build of Apache Camel 4 for Quarkus 3; resteasy-core as a component of Red Hat build of Apicurio Registry 3; resteasy-core as a component of Red Hat build of Debezium 3; resteasy-core as a component of Red Hat Build of Keycloak; rhbk/keycloak-rhel9-operator as a component of Red Hat Build of Keycloak; resteasy-core as a component of Red Hat build of Quarkus; redhat-pki:10/redhat-pki.src as a component of Red Hat Certificate System 10; redhat-pki.src as a component of Red Hat Certificate System 11; dogtag-pki.src as a component of Red Hat Enterprise Linux 10; idm-pki-acme as a component of Red Hat Enterprise Linux 10; idm-pki-base as a component of Red Hat Enterprise Linux 10; idm-pki-ca as a component of Red Hat Enterprise Linux 10; idm-pki-java as a component of Red Hat Enterprise Linux 10; idm-pki-kra as a component of Red Hat Enterprise Linux 10; idm-pki-server as a component of Red Hat Enterprise Linux 10; idm-pki-tools as a component of Red Hat Enterprise Linux 10; python3-idm-pki as a component of Red Hat Enterprise Linux 10; idm-jss-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-jss (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-ldapjdk-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-ldapjdk (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-acme (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-base-java (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-base (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-ca (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-kra (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-server (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-symkey (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-tools (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-tomcatjss (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; and 56 more
    After
    resteasy-core as a component of Red Hat build of Apache Camel 4 for Quarkus 3; resteasy-core as a component of Red Hat build of Apicurio Registry 3; resteasy-core as a component of Red Hat build of Debezium 3; resteasy-core as a component of Red Hat Build of Keycloak; rhbk/keycloak-rhel9-operator as a component of Red Hat Build of Keycloak; resteasy-core as a component of Red Hat build of Quarkus; redhat-pki:10/redhat-pki.src as a component of Red Hat Certificate System 10; redhat-pki.src as a component of Red Hat Certificate System 11; dogtag-pki.src as a component of Red Hat Enterprise Linux 10; idm-pki-acme as a component of Red Hat Enterprise Linux 10; idm-pki-base as a component of Red Hat Enterprise Linux 10; idm-pki-ca as a component of Red Hat Enterprise Linux 10; idm-pki-java as a component of Red Hat Enterprise Linux 10; idm-pki-kra as a component of Red Hat Enterprise Linux 10; idm-pki-server as a component of Red Hat Enterprise Linux 10; idm-pki-tools as a component of Red Hat Enterprise Linux 10; python3-idm-pki as a component of Red Hat Enterprise Linux 10; idm-jss-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-jss (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-ldapjdk-javadoc (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-ldapjdk (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-acme (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-base-java (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-base (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-ca (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-kra (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-server (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-symkey (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-pki-tools (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; idm-tomcatjss (pki-core:10.6) as a component of Red Hat Enterprise Linux 8; and 61 more
    Red Hat Product Security ↗
  3. ENISA EUVD mappingEUVD-2026-82736 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2026-82736"}
    ENISA EUVD ↗
  4. Public exploit evidencePublic exploit evidence changed from No public exploit to Public exploit reference.
    Before
    No public exploit
    After
    Public exploit reference
    CVE.org ↗
  5. Catalogue recordCVE added to the BlackTree catalogue.
    CVE.org ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-82736↗CVE authority or vendor reference↗CISA Vulnrichment SSVC evidence↗Official CVE record (CNA and ADP data)↗NVD record↗
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-2026-89058 · cve.blacktree.nl