CVE-2026-1388

{"id": "CVE-2026-1388", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "cve@gitlab.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2026-02-25T21:16:36.500", "references": [{"url": "https://about.gitlab.com/releases/2026/02/25/patch-release-gitlab-18-9-1-released/", "tags": ["Release Notes", "Vendor Advisory"], "source": "cve@gitlab.com"}, {"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/587560", "tags": ["Broken Link"], "source": "cve@gitlab.com"}, {"url": "https://hackerone.com/reports/3482893", "tags": ["Permissions Required"], "source": "cve@gitlab.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "cve@gitlab.com", "description": [{"lang": "en", "value": "CWE-1333"}]}], "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that could have allowed an unauthenticated user to cause regular expression denial of service by sending specially crafted input to a merge request endpoint under certain conditions."}, {"lang": "es", "value": "GitLab ha remediado un problema en GitLab CE/EE que afecta a todas las versiones desde la 9.2 anterior a la 18.7.5, la 18.8 anterior a la 18.8.5, y la 18.9 anterior a la 18.9.1 que podr\u00eda haber permitido a un usuario no autenticado causar una denegaci\u00f3n de servicio por expresi\u00f3n regular mediante el env\u00edo de una entrada especialmente dise\u00f1ada a un endpoint de solicitud de fusi\u00f3n bajo ciertas condiciones."}], "lastModified": "2026-02-28T00:45:36.973", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "vulnerable": true, "matchCriteriaId": "B12C34F6-2CBC-47AD-AD96-69D58B92FD0F", "versionEndExcluding": "18.7.5", "versionStartIncluding": "9.2.0"}, {"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "367ECB06-C074-4051-854C-04B62268A024", "versionEndExcluding": "18.7.5", "versionStartIncluding": "9.2.0"}, {"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "vulnerable": true, "matchCriteriaId": "432C7223-F8B6-4EBA-84E2-2BB8A0F367D2", "versionEndExcluding": "18.8.5", "versionStartIncluding": "18.8.0"}, {"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "630677C7-21EB-4E91-BB15-4610DCD22F98", "versionEndExcluding": "18.8.5", "versionStartIncluding": "18.8.0"}, {"criteria": "cpe:2.3:a:gitlab:gitlab:18.9.0:*:*:*:community:*:*:*", "vulnerable": true, "matchCriteriaId": "795727F0-1B38-483F-BEE8-FB252EE57AC9"}, {"criteria": "cpe:2.3:a:gitlab:gitlab:18.9.0:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "73CCBA34-57C3-454D-A898-5D216EE1D5E9"}], "operator": "OR"}]}], "sourceIdentifier": "cve@gitlab.com"}