GitLab CE/EE <18.11.11, 19.0.0-<19.0.8 allow unauthenticated GraphQL override
CVE-2026-19478 Published on August 17, 2026
Improper Control of Generation of Code ('Code Injection') 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 allow an unauthenticated user to remotely modify or delete public projects and user data via a GraphQL directive.
Vulnerability Analysis
CVE-2026-19478 is exploitable with network access, and does not require authorization privileges or 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 a small impact on confidentiality, a high impact on integrity and availability.
Weakness Type
What is a Code Injection Vulnerability?
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CVE-2026-19478 has been classified to as a Code Injection vulnerability or weakness.
Products Associated with CVE-2026-19478
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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.