{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-32739","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-13T15:02:00.628Z","datePublished":"2026-05-19T19:10:03.585Z","dateUpdated":"2026-05-20T13:07:09.840Z"},"containers":{"cna":{"title":"libheif is Vulnerable to Infinite Loop DoS via stts Sample Duration Lookup","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":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/strukturag/libheif/security/advisories/GHSA-j9g7-q9hv-gq8c","tags":["x_refsource_CONFIRM"],"url":"https://github.com/strukturag/libheif/security/advisories/GHSA-j9g7-q9hv-gq8c"},{"name":"https://github.com/strukturag/libheif/releases/tag/v1.22.0","tags":["x_refsource_MISC"],"url":"https://github.com/strukturag/libheif/releases/tag/v1.22.0"}],"affected":[{"vendor":"strukturag","product":"libheif","versions":[{"version":"< 1.22.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-19T19:10:03.585Z"},"descriptions":[{"lang":"en","value":"libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 800-byte HEIF sequence file causes an infinite loop in Box_stts::get_sample_duration(), consuming 100% CPU indefinitely with zero progress, leading to DoS. The loop has no iteration limit or timeout and is triggered during file open (parsing) - before any user interaction or image decoding. The process stays alive (no crash, no error logged), making it invisible to crash-based monitoring. This issue has been fixed in version 1.22.0."}],"source":{"advisory":"GHSA-j9g7-q9hv-gq8c","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/strukturag/libheif/security/advisories/GHSA-j9g7-q9hv-gq8c","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-20T13:07:06.731430Z","id":"CVE-2026-32739","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-20T13:07:09.840Z"}}]}}