XSS in Jenkins
CVE-2023-27898
Jenkins 2.270 through 2.393 (both inclusive), LTS 2.277.1 through 2.375.3 (both inclusive) does not escape the Jenkins version a plugin depends on when rendering the error message stating its incompatibility with the current version of Jenkins, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to provide plugins to the configured update sites and have this message shown by Jenkins instances.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.018 (77.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Jenkins
- Jenkins Project — versions 2.270
Weakness classification (CWE)
Public proof-of-concept exploits
References
- jenkinsci-cert@googlegroups.com (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-27898?
- CVE-2023-27898 is a critical-severity vulnerability in Jenkins, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2023-03-10.
- How severe is CVE-2023-27898?
- Critical severity. CVSS v3 base score is 9.6 out of 10.
- Is CVE-2023-27898 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.