CVE-2021-21603

medium

Description

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape notification bar response contents, resulting in a cross-site scripting (XSS) vulnerability.

References

https://github.com/advisories/GHSA-98gq-6hxg-52r6

https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-1889

Details

Source: Mitre, NVD

Published: 2021-01-13

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 3.5

Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N

Severity: Low

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00319

Detections

Analytics