CVE-2026-27099

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 v3 8.0 HIGH

8.0^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:jenkins:jenkins:::::-:::*
	cpe:2.3:a:jenkins:jenkins:::::lts:::*

History

No history.

Information

Published : 2026-02-18 15:18

Updated : 2026-02-20 20:52

NVD link : CVE-2026-27099

Mitre link : CVE-2026-27099

CVE.ORG link : CVE-2026-27099

JSON object : View

Products Affected

jenkins

jenkins

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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