{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-1184", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "state": "PUBLISHED", "assignerShortName": "GitLab", "dateReserved": "2026-01-19T12:33:32.638Z", "datePublished": "2026-05-14T05:37:02.391Z", "dateUpdated": "2026-05-14T05:37:02.391Z"}, "containers": {"cna": {"title": "Deserialization of Untrusted Data in GitLab", "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab EE affecting all versions from 11.9 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by uploading a specially crafted file due to improper validation."}], "affected": [{"vendor": "GitLab", "product": "GitLab", "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "versions": [{"version": "11.9", "status": "affected", "lessThan": "18.9.7", "versionType": "semver"}, {"version": "18.10", "status": "affected", "lessThan": "18.10.6", "versionType": "semver"}, {"version": "18.11", "status": "affected", "lessThan": "18.11.3", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-502: Deserialization of Untrusted Data", "cweId": "CWE-502", "type": "CWE"}]}], "references": [{"url": "https://hackerone.com/reports/3515842", "name": "HackerOne Bug Bounty Report #3515842", "tags": ["technical-description", "exploit", "permissions-required"]}, {"url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/586634"}, {"url": "https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM"}}], "solutions": [{"lang": "en", "value": "Upgrade to versions 18.9.7, 18.10.6, 18.11.3 or above."}], "credits": [{"lang": "en", "value": "Thanks [a92847865](https://hackerone.com/a92847865) for reporting this vulnerability through our HackerOne bug bounty program", "type": "finder"}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2026-05-14T05:37:02.391Z"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab EE affecting all versions from 11.9 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an unauthenticated user to cause denial of service by uploading a specially crafted file due to improper validation."}], "id": "CVE-2026-1184", "lastModified": "2026-05-14T06:16:21.190", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "cve@gitlab.com", "type": "Secondary"}]}, "published": "2026-05-14T06:16:21.190", "references": [{"source": "cve@gitlab.com", "url": "https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/"}, {"source": "cve@gitlab.com", "url": "https://gitlab.com/gitlab-org/gitlab/-/work_items/586634"}, {"source": "cve@gitlab.com", "url": "https://hackerone.com/reports/3515842"}], "sourceIdentifier": "cve@gitlab.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "cve@gitlab.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[11.9,18.9.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[18.10,18.10.6)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[18.11,18.11.3)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "GitLab", "source": "cna", "vendor": "GitLab"}, "product": "gitlab", "vendor": "gitlab"}], "created": "2026-05-14T07:30:05.949138+00:00", "updated": "2026-05-14T07:30:05.949194+00:00", "vendors": ["gitlab", "gitlab$PRODUCT$gitlab"]}