{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-49271", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-05-28T20:07:58.860Z", "datePublished": "2026-06-19T17:16:20.157Z", "dateUpdated": "2026-06-22T17:05:02.343Z"}, "containers": {"cna": {"title": "libheif: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder", "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "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-r7qj-cg5r-r6vf", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vf"}], "affected": [{"vendor": "strukturag", "product": "libheif", "versions": [{"version": "< 1.22.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-19T17:16:20.157Z"}, "descriptions": [{"lang": "en", "value": "libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the compressed item buffer, producing an out-of-bounds heap read and crash. Version 1.22.1 patches the issue."}], "source": {"advisory": "GHSA-r7qj-cg5r-r6vf", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vf", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-22T17:01:07.409364Z", "id": "CVE-2026-49271", "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": "2026-06-22T17:05:02.343Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-49271", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-22T17:01:07.409364Z"}}}], "references": [{"url": "https://github.com/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vf", "tags": ["exploit"]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-22T17:00:56.312Z"}}], "cna": {"title": "libheif: Wrapped icef compressed-unit range check causes out-of-bounds read in uncompressed HEIF decoder", "source": {"advisory": "GHSA-r7qj-cg5r-r6vf", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "strukturag", "product": "libheif", "versions": [{"status": "affected", "version": "< 1.22.1"}]}], "references": [{"url": "https://github.com/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vf", "name": "https://github.com/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vf", "tags": ["x_refsource_CONFIRM"]}], "descriptions": [{"lang": "en", "value": "libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the compressed item buffer, producing an out-of-bounds heap read and crash. Version 1.22.1 patches the issue."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-125", "description": "CWE-125: Out-of-bounds Read"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-06-19T17:16:20.157Z"}}}, "cveMetadata": {"cveId": "CVE-2026-49271", "state": "PUBLISHED", "dateUpdated": "2026-06-22T17:05:02.343Z", "dateReserved": "2026-05-28T20:07:58.860Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-06-19T17:16:20.157Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{}

{"bugzilla": {"description": "libheif: libheif: Denial of Service via crafted HEIF file due to integer wrap-around", "id": "2490846", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2490846"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-190", "details": ["libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the compressed item buffer, producing an out-of-bounds heap read and crash. Version 1.22.1 patches the issue.", "A flaw was found in libheif, a decoder and encoder for HEIF and AVIF file formats. A remote attacker could exploit this vulnerability by providing a specially crafted HEIF file. The uncompressed HEIF decoder's validation of `icef` compressed-unit offsets can experience an integer wrap-around. This allows the attacker to cause an out-of-bounds heap read, leading to a crash and resulting in a Denial of Service (DoS) for the application using libheif."], "mitigation": {"lang": "en:us", "value": "Configure the service to automatically restart on failure to maintain uptime if an exploit triggers a crash."}, "name": "CVE-2026-49271", "public_date": "2026-06-19T17:16:20Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-49271\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-49271\nhttps://github.com/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vf"], "statement": "Moderate: This flaw in libheif, which could lead to a denial of service through a crafted HEIF file, does not affect Red Hat products. The vulnerable code responsible for the integer wrap-around in the uncompressed HEIF decoder is not present in Red Hat's supported versions of libheif.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.22.1)"}}], "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": "2026-06-19T20:00:11.992268+00:00", "updated": "2026-06-30T14:00:06.136118+00:00", "vendors": ["struktur", "struktur$PRODUCT$libheif"]}