{"id":"CVE-2026-6976","summary":"Authorization Bypass Through User-Controlled Key in GitLab","details":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to hide changes from merge request diff views due to improper input handling of file names.","aliases":["BIT-gitlab-2026-6976"],"modified":"2026-08-27T11:30:40.054291377Z","published":"2026-06-11T10:20:11.436Z","related":["CGA-f35h-8pfg-f7f3"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"15.9"},{"fixed":"18.10.8"},{"introduced":"18.11"},{"fixed":"18.11.5"},{"introduced":"19.0"},{"fixed":"19.0.2"}],"source":"AFFECTED_FIELD"},{"extracted_events":[{"introduced":"15.9"},{"fixed":"18.10.8"},{"introduced":"18.11"},{"fixed":"18.11.5"},{"introduced":"19.0"},{"fixed":"19.0.2"}],"source":"DESCRIPTION"}],"cna_assigner":"GitLab","cwe_ids":["CWE-639"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6976.json"},"references":[{"type":"WEB","url":"https://about.gitlab.com/releases/2026/06/10/patch-release-gitlab-19-0-2-released/"},{"type":"WEB","url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/598165"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6976.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6976"},{"type":"REPORT","url":"https://hackerone.com/reports/3638136"},{"type":"PACKAGE","url":"git://git@gitlab.com:gitlab-org/gitlab.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.com/gitlab-org/gitlab","events":[{"introduced":"b107c0bae0871a67dee31ad8e52550d32c4afb66"},{"fixed":"691141944493a0faa4bc3229af2e6a8663e58653"},{"introduced":"1060c7b0ff78be7c8abe8fd6d23dcb1ca493fd78"},{"fixed":"9b638f3c6869a41d392cc3f77cfd68c8a06bda5f"},{"introduced":"f07e3c5b3c8128be5db112e5b2b618fe31ea1b35"},{"fixed":"86c99d562e4d6929fc43de673da9e48155f9ad95"}],"database_specific":{"extracted_events":[{"introduced":"15.9.0"},{"fixed":"18.10.8"},{"introduced":"18.11.0"},{"fixed":"18.11.5"},{"introduced":"19.0.0"},{"fixed":"19.0.2"}],"source":"CPE_RANGE","cpe":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*","cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*"]}}],"versions":["v19.0.0-ee","v18.11.2-ee","v18.11.0-ee"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6976.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N"}]}