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TI-2021-04703 Aliases CVE-2021-21623GHSA-96jw-3xw4-mq9p

Incorrect authorization in Jenkins Matrix Authorization Strategy Plugin

Priority LOW 31CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 1 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-863.

Summary

An incorrect permission check in Jenkins Matrix Authorization Strategy Plugin 2.6.5 and earlier allows attackers with Item/Read permission on nested items to access them, even if they lack Item/Read permission for parent folders.

Why it matters now

EPSS 0.01011 63rd percentileScored 2026-11-07
Fix Partial Jenkins Matrix Authorization Strategy Plugin (Jenkins project): 2.5.2, 2.6.3.1org.jenkins-ci.plugins:matrix-auth (Maven): 2.6.6Red Hat: 1 advisoryRed Hat: 1 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
JenkinsJenkins Matrix Authorization Strategy Pluginup to 2.6.52.5.2, 2.6.3.1Patch availableCNA
—org.jenkins-ci.plugins:matrix-auth (Maven)before 2.6.62.6.6Patch availableGHSA-96jw-3xw4-mq9p
  • Jenkins Matrix Authorization Strategy Plugin VendorJenkins Affected up to 2.6.5 Fixed in 2.5.2, 2.6.3.1 Patch available CNA
  • org.jenkins-ci.plugins:matrix-auth (Maven) Vendor— Affected before 2.6.6 Fixed in 2.6.6 Patch available GHSA-96jw-3xw4-mq9p

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:jenkins:matrix_authorization_strategy:*:*:*:*:*:jenkins:*:*up to 2.6.5VulnerableJenkins
  • cpe:2.3:a:jenkins:matrix_authorization_strategy:*:*:*:*:*:jenkins:*:* Versions up to 2.6.5 Vulnerable ·Jenkins

Remediation

  • Fix · CNA Jenkins Matrix Authorization Strategy Plugin (Jenkins project) Fixed in 2.5.2, 2.6.3.1
  • Fix · GHSA-96jw-3xw4-mq9p org.jenkins-ci.plugins:matrix-auth (Maven) Fixed in 2.6.6 Advisory →

Red Hat 1 advisory

  • RHSA-2021:2437 Released 2021-07-27 · Red Hat rating Moderate
    OpenShift Container Platform 4.8.2 packages and security update
    • Red Hat OpenShift Container Platform 4.8 afterburn-5.0.0-1.rhaos4.8.el8, atomic-openshift-service-idler-4.8.0-202106281541.p0.git.39cfc66.assembly.stream.el8, butane-0.12.1-1.rhaos4.8.el8 +47

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Container Platform 3.11AffectedNo fix yet
Red Hat OpenShift Container Platform 4AffectedNo fix yet
Red Hat OpenShift Container Platform 4.8Fixed RHSA-2021:2437
Not affected: 1 product
  • Red Hat OpenShift Container Platform 4.8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21623
  2. 2026-10-03 Alias added: GHSA-96jw-3xw4-mq9p

References

Advisory 3

Other 2

  • TI-2026-30804 Deserialization of untrusted data in Jenkins Matrix Authorization Strategy Plugin CVSS 3.1MEDIUM 6.5
  • TI-2020-02103 Cross-site scripting in Jenkins Matrix Authorization Strategy Plugin CVSS 3.1MEDIUM 5.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences