CVE-2026-19478

critical

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.

References

https://hackerone.com/reports/3926431

https://thehackernews.com/2026/08/critical-gitlab-graphql-flaw-could-let.html

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-2-4-released/

https://gitlab.com/gitlab-org/gitlab/-/work_items/611377

Details

Source: Mitre, NVD

Published: 2026-08-17

Updated: 2026-08-17

Risk Information

CVSS v2

Base Score: 9.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:C/A:C

Severity: High

CVSS v3

Base Score: 9.4

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H

Severity: Critical