CVE-2026-27099NVD

Vulnerability Summary

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.

Severity Level

HIGH(8.0)

Published Date

Feb 18, 2026

Last Modified

Feb 20, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.05%Probability

Root Weakness (CWE)

CWE-79: Cross-site Scripting (XSS) ↗

The software does not neutralize user-controllable input before it is placed in output that is used as a web page.

CVSS v3.1 Base Metrics — Score 8.0 (HIGH)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Jenkins Jenkins >= 2.483 and < 2.551
Jenkins Jenkins >= 2.492.1 and < 2.541.2

Patched Versions

Jenkins Jenkins 2.551
Jenkins Jenkins 2.541.2

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