Improper Control of Generation of Code ('Code Injection') in GitLab

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What is CVE-2026-19478?

CVE-2026-19478 is a vulnerability classified as Improper Control of Generation of Code ('Code Injection'), affecting GitLab (affected versions: 18.2 – < 18.11.11, 19.0 – < 19.0.8, and other affected versions). This vulnerability is rated Critical, with a CVSS score of 9.4. Public exploit code or evidence is available for this vulnerability, but that does not confirm exploitation in the wild.

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Overview

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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.

Affected products and scope

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Technical details

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Exploitability

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Technical impact

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Business impact

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Remediation

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Detection

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