Bug 2487544 (CVE-2026-53437) - CVE-2026-53437 jenkins: Jenkins: Phishing attack via improper redirect URL validation
Summary: CVE-2026-53437 jenkins: Jenkins: Phishing attack via improper redirect URL va...
Keywords:
Status: NEW
Alias: CVE-2026-53437
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-10 14:02 UTC by OSIDB Bzimport
Modified: 2026-06-18 19:13 UTC (History)
0 users

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Description OSIDB Bzimport 2026-06-10 14:02:11 UTC 
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.
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