XSS in Jenkins Active Choices
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.762 (99.5th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.788 · newest: 0.762 · change: -0.026
Affected products
- Jenkins Active Choices
- Jenkins Project Active Choices Plugin — versions unspecified
Weakness classification (CWE)
References
- www.jenkins.io/security/advisory/2021-02-24/ (Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/02/24/3 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21616?
- CVE-2021-21616 is a medium-severity vulnerability in Jenkins Active Choices, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2021-02-24.
- How severe is CVE-2021-21616?
- Medium severity. CVSS v3 base score is 4.6 out of 10.