CVE-2024-23901 Shared projects are unconditionally discovered by Jenkins GitLab Branch Source Plugin

What is CVE-2024-23901?

CVE-2024-23901 is a medium-severity missing authorization vulnerability in Jenkins GitLab Branch Source Plugin, published on 24 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Jenkins GitLab Branch Source Plugin 684.vea_fa_7c1e2fe3 and earlier unconditionally discovers projects that are shared with the configured owner group, allowing attackers to configure and share a project, resulting in a crafted Pipeline being built by Jenkins during the next scan of the group.

Which versions are affected by CVE-2024-23901?

2 open source packages ship an affected version, including io.jenkins.plugins:gitlab-branch-source. It affects 1 product.

Products include Jenkins Github Branch Source.

How do I fix CVE-2024-23901?

Upgrade io.jenkins.plugins:gitlab-branch-source to 688.v5fa or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2024-23901 being exploited?

There is no known exploitation of CVE-2024-23901 in the wild and no public exploit code.

Other vulnerabilities in Jenkins GitLab Branch Source Plugin

• CVE-2017-1000091 Jenkins GitHub Branch Source Plugin vulnerable to Cross-Site Request Forgery Medium 6.3
• CVE-2024-23903 Non-constant time webhook token comparison in Jenkins GitLab Branch Source Plugin Medium 5.3
• CVE-2026-57285 Jenkins GitHub Branch Source Plugin has missing permission check that allows enumerating GitHub Enterprise server URLs Medium 4.3
• CVE-2026-42522 Jenkins GitHub Branch Source Plugin: Missing permissions check allows attackers to perform a connection test Medium 4.3
• CVE-2024-23902 CSRF vulnerability in Jenkins GitLab Branch Source Plugin Medium 4.3

Sources

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

Also known as GHSA-fw9h-cxx9-gfq3.