CVE-2021-21616

Description

Jenkins Active Choices Plugin 2.5.2 and earlier does not escape reference parameter values, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

Category

4.6
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.28% Top 20%
Vendor Advisory jenkins.io
Affected: Jenkins project Jenkins Active Choices Plugin
Published at:
Updated at:

References

Link Tags
https://www.jenkins.io/security/advisory/2021-02-24/#SECURITY-2192 vendor advisory
http://www.openwall.com/lists/oss-security/2021/02/24/3 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-21616?
CVE-2021-21616 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21616?
To fix CVE-2021-21616, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21616 being actively exploited in the wild?
It is possible that CVE-2021-21616 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21616?
CVE-2021-21616 affects Jenkins project Jenkins Active Choices Plugin.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.