Name: CVE-2026-27099: Improper Neutralization of Input During Web Page Generation
Creator: Rapid7
Published: 2026-02-18T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-27099, CVSS 8, EPSS 0.00652

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.

CVSS Details

CVSS 3.1 Base Score: 8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Freebsd	—	Upgrade jenkins-ltsUpgrade jenkins	Feb 23, 2026	Feb 20, 2026
Jenkins 2026 02 18	—	Upgrade Jenkins to the latest versionUpgrade Jenkins LTS to the latest versionUpgrade Jenkins LTS to version 2.541.2Upgrade Jenkins to version 2.551	Feb 19, 2026	Feb 18, 2026

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CVSS Details

Covered by Rapid7

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