GitLab security advisories, August 2026

Every GitLab security advisory published in August 2026, from GitLab ([email protected] CNA) via NVD, with its severity, CVEs and CISA KEV status. Open a record for affected and fixed versions and the vendor's own link.

Advisories: 25
Critical: 1
High: 11
In CISA KEV: 0
CVEs: 25

GitLab advisories published in August 2026

Aug 27, 2026
High [CVE-2026-75871] GitLab has remediated a vulnerability in the GitLab AI Gateway component affecting all versions of the AI Gateway from 18.10 to 19.0.12, 19.1 to 19.1.7, and 19.2 to 19.2.2 that could have allowed an authenticated user with Duo Agent Platform access to redirect outbound model requests to an externally-controlled endpoint via a crafted inline flow configuration that overrides the HTTP Host header, resulting in disclosure of Google Cloud Vertex cloud service credentials and private signing keys
High8.2
Aug 27, 2026
High [CVE-2026-19889] GitLab has remediated a vulnerability in the GitLab AI Gateway component affecting all versions of the AI Gateway from 18.9.0 to 19.0.12, 19.1 to 19.1.7, and 19.2 to 19.2.2 that could have allowed an authenticated user with Duo Agent Platform access to redirect model requests to an externally-controlled endpoint via crafted model metadata, resulting in the disclosure of Google Vertex AI or AWS Bedrock cloud service credentials
High8.2
Aug 27, 2026
Medium [CVE-2026-4398] Authorization Bypass Through User-Controlled Key in GitLab
Medium5.4
Aug 26, 2026
High [CVE-2026-18252] GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with developer-role permissions could have executed arbitrary commands in a CI context, due to the Claude agent processing configuration from a user-controlled source
High7.3
Aug 26, 2026
Medium [CVE-2025-10903] GitLab has remediated an issue in GitLab EE affecting all versions from 11.10 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user could have caused denial of service, due to an unbounded loop triggered by specially crafted input in the SCIM user provisioning feature
Medium6.5
Aug 26, 2026
Medium [CVE-2026-3035] GitLab has remediated an issue in GitLab EE affecting all versions from 11.3 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with project Maintainer permissions could have accessed the terminal of a protected environment they were not authorized to use due to improper authorization checks
Medium5.5
Aug 26, 2026
Medium [CVE-2026-15387] GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with developer-role permissions could have influenced the execution environment of Pipeline Execution Policy enforcement jobs, due to improper handling of job dependencies
Medium4.3
Aug 26, 2026
Medium [CVE-2026-77801] GitLab has remediated an issue in GitLab CE/EE affecting all versions from 12.8 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, could have allowed an authenticated user to cause a denial of service affecting background job processing, due to missing object count limits
Medium6.5
Aug 26, 2026
Low [CVE-2026-7487] GitLab has remediated an issue in GitLab EE affecting all versions from 13.1 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with reporter-role permissions who authored a merge request could have reset merge request approval rules due to improper authorization checks
Low3.5
Aug 23, 2026
High [CVE-2026-10053] GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.8 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to achieve remote code execution due to a path traversal vulnerability in the package registry
High8.5
Aug 17, 2026
Critical [CVE-2026-19478] 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
Critical9.4
Aug 17, 2026
High [CVE-2026-19650] 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
High7.1
Aug 12, 2026
High [CVE-2026-15217] GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed cross-site scripting due to improper neutralization of user-controlled values rendered in table cell content by an analytics dashboard component
High8.7
Aug 12, 2026
High [CVE-2026-15216] GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed cross-site scripting due to improper neutralization of user-controlled data rendered in pagination controls by an analytics dashboard component
High8.7
Aug 12, 2026
High [CVE-2026-16494] GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.4 and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to modify project settings restricted to higher-privileged roles, due to missing authorization checks on a project update endpoint
High7.1
Aug 12, 2026
High [CVE-2026-19228] GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.4 and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to cause AI usage to be attributed to another namespace, due to improper authorization of identity information supplied in requests
High8.5
Aug 12, 2026
High [CVE-2026-15423] GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute CI/CD pipelines on a protected branch without the required push permissions due to improper authorization in pipeline reference validation
High8.5
Aug 12, 2026
High [CVE-2026-16627] GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to escalate privileges due to improper sanitization of HTML content rendered in a CI job modal
High7.7
Aug 12, 2026
Medium [CVE-2026-4879] GitLab has remediated an issue in GitLab EE affecting all versions from 16.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to view external status check configuration restricted to higher-privileged roles due to missing authorization on a merge request API endpoint
Medium4.3
Aug 12, 2026
Medium [CVE-2026-6821] GitLab has remediated an issue in GitLab EE affecting all versions from 12.0 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to bypass IP-based access restrictions and read limited merge request information from a private project due to missing authorization checks in a merge requests API endpoint
Medium4.3
Aug 12, 2026
Medium [CVE-2026-18433] GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.4 and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to read policy configuration belonging to a namespace they were not authorized to access, due to incorrect authorization checks in a GraphQL query
Medium4.3
Aug 12, 2026
Medium [CVE-2026-7427] GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an unauthenticated user to cause a denial of service due to improper input validation
Medium5.3
Aug 12, 2026
Medium [CVE-2026-8667] GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.6 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user with developer role to modify certain package registry metadata without the required maintainer-level permissions due to improper authorization checks
Medium4.3
Aug 12, 2026
Medium [CVE-2026-18244] GitLab has remediated an issue in GitLab EE affecting all versions from 17.7 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to view restricted configuration settings due to improper authorization checks on a group settings page
Medium4.3
Aug 12, 2026
Low [CVE-2025-9486] GitLab has remediated an issue in GitLab EE affecting all versions from 15.6 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed a user with a pending membership to receive permissions granted by a custom role, due to incorrect privilege assignment that did not account for membership state
Low3.3

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Dates are each advisory's publication date at the source, in UTC; a record with no source date is filed under the day VulniPulse first saw it.