{"id":"CVE-2026-84447","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-84447","generatedAt":"2026-10-28T04:33:42.534Z","title":"This vulnerability is fixed in 1.23.2.","description":"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.","published":"2026-09-18T16:17:13.000Z","lastModified":"2026-09-18T18:17:17.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-770"],"affected":[],"epss":{"score":0.00517,"percentile":0.43816,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"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"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-84447","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}