MEDIUMCVSS 4.3EPSS 0.5%

CVE-2026-53437

CVE-2026-53437 updated by NVD

Published: 2026-06-10
Modified: 2026-08-29
EPSS percentile: 39%
Sources: github-advisory, nvd

Summary

Jenkins 2.567 and earlier, LTS 2.555.2 and earlier improperly determines that a redirect URL after login is legitimately pointing to Jenkins when it contains tab or newline characters between `//`, allowing attackers to perform phishing attacks.

Affected packages

Ecosystem	Package	Affected versions	Fixed versions
Maven	org.jenkins-ci.main:jenkins-core	—	2.555.3, 2.568

Remediation: Upgrade to 2.555.3 or later.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-53437

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.