CVE-2026-53439 Jenkins exposes other users' timezone and view names to users with Overall/Read permission

What is CVE-2026-53439?

CVE-2026-53439 is a medium-severity vulnerability in Jenkins Jenkins, published on 10 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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".

Weakness: CWE-862

Which versions are affected by CVE-2026-53439?

5 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core and jenkins. It affects 1 product.

Products include Jenkins Jenkins.

How do I fix CVE-2026-53439?

Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.555.3 or 2.568.

Is CVE-2026-53439 being exploited?

There is no known exploitation of CVE-2026-53439 in the wild and no public exploit code.

Other vulnerabilities in Jenkins Jenkins

• CVE-2024-23897 Jenkins Command Line Interface (CLI) Path Traversal Exploited Critical 9.8
• CVE-2018-1000861 Jenkins Stapler Web Framework Deserialization of Untrusted Data Exploited Critical 9.8
• CVE-2017-1000353 Jenkins Remote Code Execution Exploited Critical 9.8
• CVE-2015-5317 Jenkins User Interface (UI) Information Disclosure Exploited High 7.5
• CVE-2021-21690 Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins Critical 9.8

All Jenkins Jenkins vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-jenkins-2026-53439, GHSA-g28p-6mcc-v4rv, MINI-3j2c-745f-g35x, MINI-5v9m-rf59-cmc4, MINI-5x29-p245-98m3, MINI-c3qc-gpx7-5hhg and 3 more.