{"id":"CVE-2026-3988","summary":"Inefficient Algorithmic Complexity in GitLab","details":"GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.","aliases":["BIT-gitlab-2026-3988"],"modified":"2026-08-17T03:36:30.549553682Z","published":"2026-03-25T16:33:43.952Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"18.5"},{"fixed":"18.8.7"},{"introduced":"18.9"},{"fixed":"18.9.3"},{"introduced":"18.10"},{"fixed":"18.10.1"}],"source":"AFFECTED_FIELD"},{"source":"DESCRIPTION","extracted_events":[{"introduced":"18.5"},{"fixed":"18.8.7"},{"introduced":"18.9"},{"fixed":"18.9.3"},{"introduced":"18.10"},{"fixed":"18.10.1"}]}],"cna_assigner":"GitLab","cwe_ids":["CWE-407"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3988.json"},"references":[{"type":"WEB","url":"https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/"},{"type":"WEB","url":"https://gitlab.com/gitlab-org/gitlab/-/work_items/593140"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3988.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3988"},{"type":"REPORT","url":"https://hackerone.com/reports/3597342"},{"type":"PACKAGE","url":"git://git@gitlab.com:gitlab-org/gitlab.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.com/gitlab-org/gitlab","events":[{"introduced":"37cc4da7158316bb9b204cef9b056f16fff1df32"},{"fixed":"bbb3a4b03698954b5a8efb0de7bafc061c303ed6"},{"introduced":"20fe49b575fedd2b8cadc2c0640178879854aeb3"},{"fixed":"d0161a9f097f49a9d33a4d8fe1d5a827ee777d67"},{"introduced":"57c08314af5bc8f317b1967330f92ed029e2c628"},{"last_affected":"57c08314af5bc8f317b1967330f92ed029e2c628"}],"database_specific":{"cpe":["cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*","cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*","cpe:2.3:a:gitlab:gitlab:18.10.0:*:*:*:community:*:*:*","cpe:2.3:a:gitlab:gitlab:18.10.0:*:*:*:enterprise:*:*:*"],"extracted_events":[{"introduced":"18.5.0"},{"fixed":"18.8.7"},{"introduced":"18.9.0"},{"fixed":"18.9.3"},{"introduced":"18.10.0"},{"last_affected":"18.10.0"}],"source":["CPE_RANGE","CPE_STRING"]}}],"versions":["18.10.0","v18.9.0-ee","v18.10.0-ee"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3988.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}