{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-12983", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "state": "PUBLISHED", "assignerShortName": "GitLab", "dateReserved": "2025-11-10T20:34:10.628Z", "datePublished": "2025-11-15T08:13:32.098Z", "dateUpdated": "2025-11-15T08:13:32.098Z"}, "containers": {"cna": {"title": "Memory Allocation with Excessive Size Value in GitLab", "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns."}], "affected": [{"vendor": "GitLab", "product": "GitLab", "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "versions": [{"version": "16.9", "status": "affected", "lessThan": "18.3.6", "versionType": "semver"}, {"version": "18.4", "status": "affected", "lessThan": "18.4.4", "versionType": "semver"}, {"version": "18.5", "status": "affected", "lessThan": "18.5.2", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-789: Memory Allocation with Excessive Size Value", "cweId": "CWE-789", "type": "CWE"}]}], "references": [{"url": "https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/"}, {"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/296257", "name": "GitLab Issue #296257", "tags": ["issue-tracking", "permissions-required"]}, {"url": "https://hackerone.com/reports/3419588", "name": "HackerOne Bug Bounty Report #3419588", "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:H/PR:L/UI:N/S:C/C:N/I:N/A:L", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW", "baseScore": 3.5, "baseSeverity": "LOW"}}], "solutions": [{"lang": "en", "value": "Upgrade to versions 18.3.6, 18.4.4, 18.5.2 or above."}], "credits": [{"lang": "en", "value": "This issue was found", "type": "finder"}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2025-11-15T08:13:32.098Z"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns."}], "id": "CVE-2025-12983", "lastModified": "2025-11-15T09:15:41.950", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.5, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "cve@gitlab.com", "type": "Secondary"}]}, "published": "2025-11-15T09:15:41.950", "references": [{"source": "cve@gitlab.com", "url": "https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/"}, {"source": "cve@gitlab.com", "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/296257"}, {"source": "cve@gitlab.com", "url": "https://hackerone.com/reports/3419588"}], "sourceIdentifier": "cve@gitlab.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-789"}], "source": "cve@gitlab.com", "type": "Primary"}]}

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