Cross-site Scripting (XSS) Affecting jenkins-2.555 package, versions <2.555.3-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.26% (18th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-JENKINS2555-17677944
  • published30 Jun 2026
  • disclosed10 Jun 2026

Introduced: 10 Jun 2026

CVE-2026-53441  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Chainguard jenkins-2.555 to version 2.555.3-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream jenkins-2.555 package and not the jenkins-2.555 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Jenkins 2.483 through 2.567 (both inclusive), LTS 2.492.1 through 2.555.2 (both inclusive) does not escape the user-provided description of a generic offline cause that could be set through the POST config.xml API, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure permission.

CVSS Base Scores

version 3.1