{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-12653", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "state": "PUBLISHED", "assignerShortName": "GitLab", "dateReserved": "2025-11-03T20:33:36.697Z", "datePublished": "2025-11-26T19:46:12.641Z", "dateUpdated": "2025-11-26T19:46:12.641Z"}, "containers": {"cna": {"title": "Authentication Bypass by Spoofing in GitLab", "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that under specific conditions could have allowed an unauthenticated user to join arbitrary organizations by changing headers on some requests."}], "affected": [{"vendor": "GitLab", "product": "GitLab", "repo": "git://[email protected]:gitlab-org/gitlab.git", "cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "versions": [{"version": "18.3", "status": "affected", "lessThan": "18.4.5", "versionType": "semver"}, {"version": "18.5", "status": "affected", "lessThan": "18.5.3", "versionType": "semver"}, {"version": "18.6", "status": "affected", "lessThan": "18.6.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-290: Authentication Bypass by Spoofing", "cweId": "CWE-290", "type": "CWE"}]}], "references": [{"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/579372", "name": "GitLab Issue #579372", "tags": ["issue-tracking", "permissions-required"]}, {"url": "https://hackerone.com/reports/3370245", "name": "HackerOne Bug Bounty Report #3370245", "tags": ["technical-description", "exploit", "permissions-required"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM"}}], "solutions": [{"lang": "en", "value": "Upgrade to versions 18.4.5, 18.5.3, 18.6.1 or above."}], "credits": [{"lang": "en", "value": "Thanks [pwnie](https://hackerone.com/pwnie) for reporting this vulnerability through our HackerOne bug bounty program", "type": "finder"}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2025-11-26T19:46:12.641Z"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 18.4.5, 18.5 before 18.5.3, and 18.6 before 18.6.1 that under specific conditions could have allowed an unauthenticated user to join arbitrary organizations by changing headers on some requests."}], "id": "CVE-2025-12653", "lastModified": "2025-11-26T20:15:49.023", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "[email protected]", "type": "Secondary"}]}, "published": "2025-11-26T20:15:49.023", "references": [{"source": "[email protected]", "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/579372"}, {"source": "[email protected]", "url": "https://hackerone.com/reports/3370245"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-290"}], "source": "[email protected]", "type": "Primary"}]}

{}