GitLab Community Edition/Enterprise Edition up to 18.9.6/18.10.5/18.11.2 cross-site request forgery

Summaryinfo

A vulnerability has been found in GitLab Community Edition and Enterprise Edition up to 18.9.6/18.10.5/18.11.2 and classified as problematic. Affected is an unknown function. This manipulation causes cross-site request forgery. This vulnerability is registered as CVE-2026-4527. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in GitLab Community Edition and Enterprise Edition up to 18.9.6/18.10.5/18.11.2. Affected by this vulnerability is an unknown part. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. The CWE definition for the vulnerability is CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. As an impact it is known to affect integrity. The summary by CVE is:

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to create unauthorized Jira subscriptions for a targeted user's namespace via a specially crafted link due to missing CSRF protection.

The weakness was published by maksyche. It is possible to read the advisory at gitlab.com. This vulnerability is known as CVE-2026-4527 since 03/20/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 314551 (GitLab 11.10 < 18.9.7 / 18.10 < 18.10.6 / 18.11 < 18.11.3 (CVE-2026-4527)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 18.9.7, 18.10.6 or 18.11.3 eliminates this vulnerability. The upgrade is hosted for download at about.gitlab.com.

The vulnerability is also documented in the vulnerability database at Tenable (314551). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Bug Tracking Software

Vendor

• GitLab

Name

• Community Edition
• Enterprise Edition

Version

• 18.9.0
• 18.9.1
• 18.9.2
• 18.9.3
• 18.9.4
• 18.9.5
• 18.9.6
• 18.10.0
• 18.10.1
• 18.10.2
• 18.10.3
• 18.10.4
• 18.10.5
• 18.11.0
• 18.11.1
• 18.11.2

License

• open-source

Website

• Vendor: https://gitlab.com/

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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