Remote code execution vulnerability in Jenkins Templating Engine Plugin

published 2021-04-21 5 y ago modified 2026-06-17 4 mo ago also GHSA-p6qc-37hq-wqr6 , EUVD-2022-4698

cvss: 8.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.7%; EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 links 1

maven org.jenkins-ci.plugins:templating-engine 2.2

github.com/jenkinsci/templating-engine-plugin@aed14be commit

Exploit prediction

1.75% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
maven	org.jenkins-ci.plugins:templating-engine	<2.2	2.2

Affected products

Jenkins project Jenkins Templating Engine Plugin

Classification

Weakness

CWE-693 Protection Mechanism Failure

References

github.com /jenkinsci/templating-engine-plugin/commit/aed14bed7333329f51330d0a8111e4d94cdee3e6
web
jenkins.io /security/advisory/2021-04-21/#SECURITY-2311
web, vendor-advisory
openwall.com /lists/oss-security/2021/04/21/2
mailing-list, web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2021-21646
advisory
github.com /jenkinsci/templating-engine-plugin
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary