CVE-2021-21616
MEDIUMCVSS 4.6/10EPSS 78.82%
Last modified
CVE-2021-21616 is a medium-severity vulnerability rated 4.6/10 on the CVSS scale. 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.. EPSS estimates a 78.82% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Jenkins | Active Choices | <= 2.5.2 |
References
- http://www.openwall.com/lists/oss-security/2021/02/24/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/02/24/3Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-21616?
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.
How severe is CVE-2021-21616?
CVE-2021-21616 has a CVSS score of 4.6/10 (MEDIUM severity). The EPSS model estimates a 78.82% probability of exploitation in the next 30 days.
How do I fix CVE-2021-21616?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-21616?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST