CVE-2026-62377

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{"affected": [{"affectedData": [{"product": "libheif", "vendor": "strukturag", "versions": [{"status": "affected", "version": "< 1.23.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.0 and earlier, a crafted HEIF sequence accepted by heif_context_read_from_memory() can leave the context with no registered sequence tracks and crash when heif_context_get_track(ctx, 0) is called. HeifContext::get_track() in libheif/context.cc executes assert(has_sequence()) before its normal error handling, so assert-enabled builds abort instead of allowing the public wrapper in libheif/api/libheif/heif_sequences.cc to return null. In release builds, removing the assertion lets the track_id zero path dereference m_tracks.begin()->second on an empty map, which is undefined behavior and typically crashes. The issue is reachable through documented public APIs after parsing attacker-controlled bytes. This issue is fixed in version 1.23.1."}, {"lang": "es", "value": "libheif es un decodificador y codificador de formato de archivo HEIF y AVIF. En la versi\u00f3n 1.23.0 y anteriores, una secuencia HEIF manipulada aceptada por heif_context_read_from_memory() puede dejar el contexto sin pistas de secuencia registradas y fallar cuando se llama a heif_context_get_track(ctx, 0). HeifContext::get_track() en libheif/context.cc ejecuta assert(has_sequence()) antes de su manejo de errores normal, por lo que las compilaciones con aserciones habilitadas abortan en lugar de permitir que el envoltorio p\u00fablico en libheif/api/libheif/heif_sequences.cc devuelva nulo. En las compilaciones de lanzamiento, eliminar la aserci\u00f3n permite que la ruta con track_id cero desreferencie m_tracks.begin() -> second en un mapa vac\u00edo, lo cual es un comportamiento indefinido y t\u00edpicamente falla. El problema es alcanzable a trav\u00e9s de APIs p\u00fablicas documentadas despu\u00e9s de analizar bytes controlados por el atacante. Este problema est\u00e1 solucionado en la versi\u00f3n 1.23.1."}], "id": "CVE-2026-62377", "lastModified": "2026-10-22T16:09:59.560", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "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:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62377", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-19T18:03:45.406952Z", "version": "2.0.3"}}]}, "published": "2026-08-18T22:17:03.167", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/strukturag/libheif/commit/e1a0bc1c1ae74f8075eaca30a1cdb2b9bee698d3"}, {"source": "security-advisories@github.com", "url": "https://github.com/strukturag/libheif/issues/1844"}, {"source": "security-advisories@github.com", "url": "https://github.com/strukturag/libheif/releases/tag/v1.23.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-9ww4-9v47-m7pj"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-617"}, {"lang": "en", "value": "CWE-908"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.23.1)"}}], "enrichment": {"confidence": 94.0, "confidence_source": "matching", "scores": [{"score": 94.0, "source": "matching"}]}, "original": {"product": "libheif", "source": "cna", "vendor": "strukturag"}, "product": "libheif", "vendor": "struktur"}], "created": "2026-08-19T00:30:04.355275+00:00", "updated": "2026-08-21T20:45:03.653801+00:00", "vendors": ["struktur", "struktur$PRODUCT$libheif"]}