What’s Vulnerable › Vulnerabilities

CVE-2021-21699

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 88.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-12 · updated 2026-06-17
• Weakness: CWE-79

Description

Jenkins Active Choices Plugin 2.5.6 and earlier does not escape the parameter name of reactive parameters and dynamic reference parameters, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

Affected products

• Jenkins project Jenkins Active Choices Plugin: through 2.5.6

References

• http://www.openwall.com/lists/oss-security/2021/11/12/1
• https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2219
• http://www.openwall.com/lists/oss-security/2021/11/12/1
• https://www.jenkins.io/security/advisory/2021-11-12/#SECURITY-2219

Get alerted when CVE-2021-21699 or the next vulnerability affects your stack