CVE-2021-21635

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-30 · updated 2026-06-17
Weakness: CWE-79

Description

Jenkins REST List Parameter Plugin 1.3.0 and earlier does not escape a parameter name reference in embedded JavaScript, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

Affected products

Jenkins project Jenkins REST List Parameter Plugin: through 1.3.0

References

http://www.openwall.com/lists/oss-security/2021/03/30/1
https://www.jenkins.io/security/advisory/2021-03-30/#SECURITY-2261
http://www.openwall.com/lists/oss-security/2021/03/30/1
https://www.jenkins.io/security/advisory/2021-03-30/#SECURITY-2261

Get alerted when CVE-2021-21635 or the next vulnerability affects your stack