CVE-2026-19478
Received Received - Intake

Unauthenticated GraphQL Data Modification in GitLab CE/EE

Publication date: 2026-08-17

Last updated on: 2026-08-17

Assigner: GitLab Inc.

Description
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.

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Meta Information

Published
2026-08-17
Last Modified
2026-08-17
Generated
2026-08-18
AI Q&A
2026-08-17
EPSS Evaluated
N/A
NVD
CVE-2026-19478
EUVD
EUVD-2026-60443

Affected Vendors & Products

Showing 8 associated CPEs
Vendor Product Version / Range
gitlab gitlab_ce From 18.2 (inc) to 18.11.11 (exc)
gitlab gitlab_ee From 18.2 (inc) to 18.11.11 (exc)
gitlab gitlab_ce From 19.0 (inc) to 19.0.8 (exc)
gitlab gitlab_ee From 19.0 (inc) to 19.0.8 (exc)
gitlab gitlab_ce From 19.1 (inc) to 19.1.6 (exc)
gitlab gitlab_ee From 19.1 (inc) to 19.1.6 (exc)
gitlab gitlab_ce From 19.2 (inc) to 19.2.4 (exc)
gitlab gitlab_ee From 19.2 (inc) to 19.2.4 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-94 The product 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.

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Executive Summary

This vulnerability in GitLab CE/EE allows an unauthenticated user to remotely modify or delete public projects and user data via a GraphQL directive. It affects 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.

Detection Guidance

To detect this vulnerability, check your GitLab version against the affected releases (18.2 to 18.11.11, 19.0 to 19.0.8, 19.1 to 19.1.6, 19.2 to 19.2.4). Run 'gitlab-rake gitlab:version' to check the installed version. If vulnerable, upgrade immediately to 18.11.11, 19.0.8, 19.1.6, or 19.2.4 or later.

Impact Analysis

Unauthenticated attackers could alter or delete public projects and user data. This could lead to data loss, unauthorized changes, or disruption of services if exploited.

Compliance Impact

This vulnerability could lead to unauthorized modification or deletion of public projects and user data, which may violate data integrity and access control requirements under GDPR and HIPAA. Unauthorized changes to user data could result in non-compliance with these regulations.

Mitigation Strategies

Upgrade to the latest patched versions immediately: 18.11.11, 19.0.8, 19.1.6, or 19.2.4 depending on your current version. GitLab.com and GitLab Dedicated users are already patched and require no action.

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