CVE-2026-27099

HIGH

8.0

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.

CVE Details

CVSS v3.1 Score8.0

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionREQUIRED

Published2/18/2026

Last Modified2/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

jenkins:jenkins

Weaknesses (CWE)

CWE-79

References

https://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669(jenkinsci-cert@googlegroups.com)

IOC Correlations

No correlations recorded

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