CVE-2021-21618

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 79.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-02-24 · updated 2026-06-17
Weakness: CWE-79

Description

Jenkins Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.

Affected products

Jenkins project Jenkins Repository Connector Plugin: through 2.0.2

References

https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2183
https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2183

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