XSS in Jenkins
CVE-2020-2161
Jenkins 2.227 and earlier, LTS 2.204.5 and earlier does not properly escape node labels that are shown in the form validation for label expressions on job configuration pages, resulting in a stored XSS vulnerability exploitable by users able to define node labels.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.012 (66.0th percentile) — read the EPSS interpretation.
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.
Affected products
- Jenkins
- Jenkins Project — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- jenkinsci-cert@googlegroups.com (x_refsource_CONFIRM, Vendor Advisory)
- jenkinsci-cert@googlegroups.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-2161?
- CVE-2020-2161 is a medium-severity vulnerability in Jenkins, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-03-25.
- How severe is CVE-2020-2161?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2020-2161 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.