Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape button labels in the Jenkins UI, resulting in a cross-site scripting (XSS) vulnerability exploitable by attackers with the ability to control button labels.
https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-2035
Source: MITRE
Published: 2021-01-13
Updated: 2021-01-15
Type: CWE-79
Base Score: 3.5
Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N
Impact Score: 2.9
Exploitability Score: 6.8
Severity: LOW
Base Score: 5.4
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Impact Score: 2.7
Exploitability Score: 2.3
Severity: MEDIUM