CVE-2021-21646

mediumpriority · track · 36EPSS 0.017 · 78 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.75% (78th) EPSS

CVSS 6.5 · medium

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-693US

affected products (3)

Products and version ranges known to be affected.

Jenkins Project Jenkins Templating Engine Plugin≤ unspecified ≤2.1enisa_euvdEU
jenkins templating engine≤ 2.1nvdUScpe:2.3:a:jenkins:templating_engine:*:*:*:*:*:*:*:*
Maven org.jenkins-ci.plugins:templating-engine< 2.2osvUSpkg:maven/org.jenkins-ci.plugins/templating-engine

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-p6qc-37hq-wqr6Remote code execution vulnerability in Jenkins Templating Engine Plugin2022-05-24ghsa · osvUS
Jenkins Templating Engine Plugin 2.1 and earlier does not protect its pipeline configurations using Script Security Plugin. This vulnerability allows attackers with Job/Configure permission to execute arbitrary code in the context of the Jenkins controller JVM. Jenkins Templating Engine Plugin 2.2 integrates with Script Security Plugin to protect its pipeline configurations.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2021-04-21modified 2026-06-17

references (10)

External citations — patches, advisories, analysis.

scry

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