GitLab v18.2-18.11.10, v19.0-19.0.7, v19.1-19.1.5, v19.2-19.2.3 Unauth GET GraphQL Mut Exec
CVE-2026-19650 Published on August 17, 2026
Cross-Site Request Forgery (CSRF) in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.11.11, 19.0 before 19.0.8, 19.1 before 19.1.6, and 19.2 before 19.2.4 that under certain conditions could have allowed an unauthenticated user to execute mutations via GET requests due to improper request validation in GraphQL multiplex query handling.
Vulnerability Analysis
CVE-2026-19650 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity, and a small impact on availability.
Weakness Type
What is a Session Riding Vulnerability?
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. When a web server is designed to receive a request from a client without any mechanism for verifying that it was intentionally sent, then it might be possible for an attacker to trick a client into making an unintentional request to the web server which will be treated as an authentic request. This can be done via a URL, image load, XMLHttpRequest, etc. and can result in exposure of data or unintended code execution.
CVE-2026-19650 has been classified to as a Session Riding vulnerability or weakness.
Products Associated with CVE-2026-19650
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Affected Versions
GitLab:- Version 18.2 and below 18.11.11 is affected.
- Version 19.0 and below 19.0.8 is affected.
- Version 19.1 and below 19.1.6 is affected.
- Version 19.2 and below 19.2.4 is affected.