Jenkins <2.567 / <2.555.2: Missing Permission Check Exposes Usr tz & Views
CVE-2026-53439 Published on June 10, 2026
Missing permission checks in Jenkins 2.567 and earlier, LTS 2.555.2 and earlier allow attackers with Overall/Read permission to determine other users' configured timezone and to enumerate view names of other users' "My Views".
Vulnerability Analysis
CVE-2026-53439 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-53439 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-53439
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Affected Versions
Jenkins Project Jenkins:- Version 2.568 and below * is unaffected.
- Version 2.555.3 and below 2.555.* is unaffected.