{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-41511", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-20T18:18:50.681Z", "datePublished": "2026-05-08T18:52:39.438Z", "dateUpdated": "2026-05-08T18:52:39.438Z"}, "containers": {"cna": {"title": "OpenMcdf has an Infinite loop DoS via crafted CFB directory cycle", "problemTypes": [{"descriptions": [{"cweId": "CWE-835", "lang": "en", "description": "CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/openmcdf/openmcdf/security/advisories/GHSA-jxpf-xq2m-q525", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/openmcdf/openmcdf/security/advisories/GHSA-jxpf-xq2m-q525"}, {"name": "https://github.com/openmcdf/openmcdf/commit/24f445a557fc4f46461cf6d02d296cce16c293a0", "tags": ["x_refsource_MISC"], "url": "https://github.com/openmcdf/openmcdf/commit/24f445a557fc4f46461cf6d02d296cce16c293a0"}, {"name": "https://github.com/openmcdf/openmcdf/releases/tag/v3.1.3", "tags": ["x_refsource_MISC"], "url": "https://github.com/openmcdf/openmcdf/releases/tag/v3.1.3"}], "affected": [{"vendor": "ironfede", "product": "openmcdf", "versions": [{"version": "< 3.1.3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-08T18:52:39.438Z"}, "descriptions": [{"lang": "en", "value": "OpenMcdf is a fully .NET / C# library to manipulate Compound File Binary File Format files, also known as Structured Storage. Prior to version 3.1.3, OpenMcdf does not detect cycles in the directory entry red-black tree of a Compound File Binary (CFB) document. A crafted CFB file with a cycle in the LeftSiblingID / RightSiblingID chain causes Storage.EnumerateEntries() and Storage.OpenStream() to loop indefinitely, consuming the calling thread with no possibility of recovery via try/catch. This issue has been patched in version 3.1.3."}], "source": {"advisory": "GHSA-jxpf-xq2m-q525", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "OpenMcdf is a fully .NET / C# library to manipulate Compound File Binary File Format files, also known as Structured Storage. Prior to version 3.1.3, OpenMcdf does not detect cycles in the directory entry red-black tree of a Compound File Binary (CFB) document. A crafted CFB file with a cycle in the LeftSiblingID / RightSiblingID chain causes Storage.EnumerateEntries() and Storage.OpenStream() to loop indefinitely, consuming the calling thread with no possibility of recovery via try/catch. This issue has been patched in version 3.1.3."}], "id": "CVE-2026-41511", "lastModified": "2026-05-08T19:16:31.363", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-08T19:16:31.363", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/openmcdf/openmcdf/commit/24f445a557fc4f46461cf6d02d296cce16c293a0"}, {"source": "security-advisories@github.com", "url": "https://github.com/openmcdf/openmcdf/releases/tag/v3.1.3"}, {"source": "security-advisories@github.com", "url": "https://github.com/openmcdf/openmcdf/security/advisories/GHSA-jxpf-xq2m-q525"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-835"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-05-08T20:45:16.332004+00:00", "updated": "2026-05-08T20:45:16.332028+00:00", "vendors": []}