What is CVE-2021-21622?

CVE-2021-21622 is a medium-severity vulnerability in Jenkins Artifact Repository Parameter, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-02-24.

How severe is CVE-2021-21622?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Jenkins Artifact Repository Parameter

CVE-2021-21622

Jenkins Artifact Repository Parameter Plugin 1.0.0 and earlier does not escape parameter names and descriptions, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-02-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.094 (95.3th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.094 · newest: 0.094 · change: 0.000

Affected products

Jenkins Artifact Repository Parameter
Jenkins Project Artifact Repository Parameter Plugin — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.jenkins.io/security/advisory/2021-02-24/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-21622?: CVE-2021-21622 is a medium-severity vulnerability in Jenkins Artifact Repository Parameter, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-02-24.
How severe is CVE-2021-21622?: Medium severity. CVSS v3 base score is 5.4 out of 10.