CVE-2026-84447

{"id": "CVE-2026-84447", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-84447", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-18T17:29:29.218555Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "strukturag", "product": "libheif", "versions": [{"status": "affected", "version": "< 1.23.2"}]}]}], "published": "2026-09-18T16:17:12.677", "references": [{"url": "https://github.com/strukturag/libheif/commit/30b52a4e829efe0ee6d7208e8500b99f664af5e9", "source": "security-advisories@github.com"}, {"url": "https://github.com/strukturag/libheif/releases/tag/v1.23.2", "source": "security-advisories@github.com"}, {"url": "https://github.com/strukturag/libheif/security/advisories/GHSA-x8xm-cm2c-cfc8", "source": "security-advisories@github.com"}, {"url": "https://github.com/strukturag/libheif/security/advisories/GHSA-x8xm-cm2c-cfc8", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-770"}]}], "descriptions": [{"lang": "en", "value": "libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_image() has no shared operation budget. This vulnerability is fixed in 1.23.2."}], "lastModified": "2026-09-18T18:17:17.017", "sourceIdentifier": "security-advisories@github.com"}