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TI-2021-04726 Aliases CVE-2021-21646GHSA-p6qc-37hq-wqr6

Protection mechanism failure in Jenkins Templating Engine Plugin

Priority MEDIUM 42CWE-693Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-693.

Summary

Jenkins Templating Engine Plugin 2.1 and earlier does not protect its pipeline configurations using Script Security Plugin, allowing attackers with Job/Configure permission to execute arbitrary code in the context of the Jenkins controller JVM.

Why it matters now

EPSS 0.01749 77th percentileScored 2026-11-07
Fix Fixed org.jenkins-ci.plugins:templating-engine (Maven): 2.2

SSVC decision points

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

Affected products

VendorProductAffected versionsFixed inStatusSource
JenkinsJenkins Templating Engine Pluginup to 2.1—No fix listedCNA
—org.jenkins-ci.plugins:templating-engine (Maven)before 2.22.2Patch availableGHSA-p6qc-37hq-wqr6
  • Jenkins Templating Engine Plugin VendorJenkins Affected up to 2.1 Fixed in — No fix listed CNA
  • org.jenkins-ci.plugins:templating-engine (Maven) Vendor— Affected before 2.2 Fixed in 2.2 Patch available GHSA-p6qc-37hq-wqr6

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:jenkins:templating_engine:*:*:*:*:*:jenkins:*:*up to 2.1VulnerableJenkins
  • cpe:2.3:a:jenkins:templating_engine:*:*:*:*:*:jenkins:*:* Versions up to 2.1 Vulnerable ·Jenkins

Remediation

  • Fix · GHSA-p6qc-37hq-wqr6 org.jenkins-ci.plugins:templating-engine (Maven) Fixed in 2.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21646
  2. 2026-10-03 Alias added: GHSA-p6qc-37hq-wqr6

References

Advisory 3

Other 2

  • TI-2025-22859 Code injection in Jenkins Templating Engine Plugin CVSS 3.1HIGH 8.8

Sources

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