XSS in Jenkins Extra Columns
CVE-2021-21630
Jenkins Extra Columns Plugin 1.22 and earlier does not escape parameter values in the build parameters column, 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 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.724 (99.4th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.724 · newest: 0.724 · change: 0.000
Affected products
- Jenkins Extra Columns
- Jenkins Project Extra Columns Plugin — versions unspecified
Weakness classification (CWE)
References
- www.jenkins.io/security/advisory/2021-03-30/ (Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/03/30/1 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21630?
- CVE-2021-21630 is a medium-severity vulnerability in Jenkins Extra Columns, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-30.
- How severe is CVE-2021-21630?
- Medium severity. CVSS v3 base score is 5.4 out of 10.