Is CVE-2026-117626 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-117626 being exploited in the wild.

How severe is CVE-2026-117626?

Informational severity, published 28 October 2026.

Which products and versions are affected?

Jenkins 2.587 and earlier, LTS 2.580.1 and earlier.

Is there a fix for CVE-2026-117626?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-117626 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-117626?

Check whether you run Jenkins at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-117626: Jenkins path traversal in file browser workspace disclosure

CVE-2026-117626 · Severity: info · Published 2026-10-28

Jenkins, a popular automation server for continuous integration and deployment, contains a vulnerability in its file browser that allows improper path traversal. Attackers with read permissions can discover filenames, sizes, and modification times of files in the Jenkins installation directory, while those with workspace permissions can enumerate job names—exposing sensitive project information that could aid further attacks.

Technologies: Jenkins. Vendors: Jenkins.

Quick answers

Is CVE-2026-117626 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-117626 being exploited in the wild.
How severe is CVE-2026-117626?: Informational severity, published 28 October 2026.
Which products and versions are affected?: Jenkins 2.587 and earlier, LTS 2.580.1 and earlier.
Is there a fix for CVE-2026-117626?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-117626 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-117626?: Check whether you run Jenkins at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

Jenkins 2.587 and earlier fails to properly validate file paths in the workspace and userContent file browser, allowing path traversal to access parent directories. Attackers with Overall/Read permission can enumerate $JENKINS_HOME files and directories; those with Item/Workspace permission can discover co-located job names on shared agents. The vulnerability is due to insufficient path validation in the file browser component.

Affected products

Jenkins Jenkins 2.587 and earlier, LTS 2.580.1 and earlier

Timeline

2026-10-28: disclosed

References

https://www.jenkins.io/security/advisory/2026-10-28/

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