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TI-2021-04764 Aliases CVE-2021-21684GHSA-gghc-g8cj-4vfv

Improper output encoding in Jenkins Git Plugin

Priority LOW 30CWE-116Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Partial Red Hat: 1 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-79.

Summary

Jenkins Git Plugin 4.8.2 and earlier does not escape the Git SHA-1 checksum parameters provided to commit notifications when displaying them in a build cause, resulting in a stored cross-site scripting (XSS) vulnerability.

Why it matters now

EPSS 0.01242 69th percentileScored 2026-11-07
Fix Partial Jenkins Git Plugin (Jenkins project): 4.7.1.1, 4.3.1org.jenkins-ci.plugins:git (Maven): 4.8.3Red Hat: 1 advisoryRed Hat: 1 fixed, 1 without a fix

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
JenkinsJenkins Git Pluginup to 4.8.24.7.1.1, 4.3.1Patch availableCNA
—org.jenkins-ci.plugins:git (Maven)before 4.8.34.8.3Patch availableGHSA-gghc-g8cj-4vfv
  • Jenkins Git Plugin VendorJenkins Affected up to 4.8.2 Fixed in 4.7.1.1, 4.3.1 Patch available CNA
  • org.jenkins-ci.plugins:git (Maven) Vendor— Affected before 4.8.3 Fixed in 4.8.3 Patch available GHSA-gghc-g8cj-4vfv

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:jenkins:git:*:*:*:*:*:jenkins:*:*up to 4.8.2VulnerableJenkins
  • cpe:2.3:a:jenkins:git:*:*:*:*:*:jenkins:*:* Versions up to 4.8.2 Vulnerable ·Jenkins

Remediation

  • Fix · CNA Jenkins Git Plugin (Jenkins project) Fixed in 4.7.1.1, 4.3.1
  • Fix · GHSA-gghc-g8cj-4vfv org.jenkins-ci.plugins:git (Maven) Fixed in 4.8.3 Advisory →

Red Hat 1 advisory

  • RHSA-2022:0055 Released 2022-03-10 · Red Hat rating Moderate
    OpenShift Container Platform 4.10.3 bug fix and security update
    • Red Hat OpenShift Container Platform 4.10 coreos-installer-0.12.0-1.rhaos4.10.el8, coreos-installer-bootinfra-0.12.0-1.rhaos4.10.el8, cri-o-1.23.0-92.rhaos4.10.gitdaab4d1.el7 +11

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 planned: Out of support scope
Red Hat OpenShift Container Platform 4.10Fixed RHSA-2022:0055
Not affected: 2 products
  • Red Hat Fuse 7
  • Red Hat OpenShift Container Platform 4.10

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21684
  2. 2026-10-03 Alias added: GHSA-gghc-g8cj-4vfv

References

Advisory 3

Other 2

  • TI-2022-17098 Missing authorization in Jenkins Git Plugin CVSS 3.1HIGH 7.5
  • TI-2022-17097 Cross-site request forgery in Jenkins Git Plugin CVSS 3.1HIGH 8.8
  • TI-2022-13003 Path traversal in Jenkins Git Plugin CVSS 3.1HIGH 7.5
  • TI-2017-14429 Git Plugin connects to a user-specified Git repository as part of form validation. CVSS 3.0HIGH 7.5
  • TI-2022-18196 Insufficiently protected credentials in Jenkins Git Plugin CVSS 3.1MEDIUM 6.5
  • TI-2018-15763 An improper authorization vulnerability exists in Jenkins Git Plugin version 3.7.0 and… CVSS 3.0MEDIUM 5.3
See all 10 →

Sources

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