{"cve":"CVE-2026-96636","nvd":{"published":"2026-10-21T21:20:31.760","modified":"2026-10-22T16:46:48.920","status":"Undergoing Analysis","description":"Pillow is a Python imaging library. Prior to 13.0.0, MpoImageFile.seek() and DcxImageFile.seek() reparse later MPO or DCX frames and replace self._size without rerunning Image._decompression_bomb_check(). A crafted multi-frame image can use a tiny first frame to pass Image.open() and then declare an over-limit later frame. Normal frame iteration through seek(), load(), or ImageSequence.Iterator can decode that frame and commit hundreds of megabytes or more, causing memory-exhaustion denial of service. This issue is fixed in version 13.0.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-400","CWE-409"],"references":["https://github.com/python-pillow/Pillow/commit/f1acfc54c53502948d0d14121872061df931db48","https://github.com/python-pillow/Pillow/pull/10011","https://github.com/python-pillow/Pillow/releases/tag/13.0.0","https://github.com/python-pillow/Pillow/security/advisories/GHSA-p8hx-v2p6-rp84"],"products":[],"source":"nvd","synced_at":"2026-10-23T16:39:28.036610720+00:00"},"epss":{"cve":"CVE-2026-96636","score":0.0035,"percentile":0.28375,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-p8hx-v2p6-rp84","url":"https://osv.dev/vulnerability/GHSA-p8hx-v2p6-rp84","summary":"Pillow: Decompression-bomb protection bypass via multi-frame seek() in MPO and DCX (MpoImageFile.seek / DcxImageFile.seek)","modified":"2026-10-22T16:15:49.311472768Z","packages":[{"ecosystem":"PyPI","name":"pillow","purl":"pkg:pypi/pillow","ranges":["<13.0.0"],"fixed":["13.0.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}