CVE-2026-27099

Published Feb 18, 2026

Last updated 20 days ago

Overview

Description
Jenkins 2.483 through 2.550 (both inclusive), LTS 2.492.1 through 2.541.1 (both inclusive) does not escape the user-provided description of the "Mark temporarily offline" offline cause, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure or Agent/Disconnect permission.
Source
jenkinsci-cert@googlegroups.com
NVD status
Analyzed
Products
jenkins

Risk scores

CVSS 3.1

Type
Secondary
Base score
8
Impact score
5.9
Exploitability score
2.1
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Severity
HIGH

Weaknesses

134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-79

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.