{"id":"CVE-2026-112401","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-112401","generatedAt":"2026-10-28T06:34:52.583Z","title":"An attacker can submit a small-dimension GIF containing many comment extensions to any application that opens the file.","description":"Pillow is a Python imaging library. From 5.4.0 until 13.0.0, Pillow performs quadratic copying while parsing GIF comments. GifImageFile._seek() repeatedly appends immutable bytes for comment sub-blocks and multiple comment extensions, and frame zero is parsed during Image.open(). An attacker can submit a small-dimension GIF containing many comment extensions to any application that opens the file. This can consume excessive CPU and deny service before the application can inspect the image. This issue is fixed in version 13.0.0.","published":"2026-10-19T22:17:08.000Z","lastModified":"2026-10-27T21:02:53.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":6.9,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-407"],"affected":["python/pillow"],"epss":{"score":0.00479,"percentile":0.41152,"date":"2026-10-27","history":[{"date":"2026-10-20","score":0.00371,"percentile":0.29632}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.48%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-19T22:17:08.000Z","detail":{"score":"6.9","severity":"MEDIUM","publishedAt":"2026-10-19T22:17:07.503Z"},"summary":"New CVE, medium severity (CVSS 6.9)."}],"references":[{"url":"https://github.com/python-pillow/Pillow/commit/68a3fe957d8a4d552e8c69d96066d749f0614c7e","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/python-pillow/Pillow/releases/tag/13.0.0","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/python-pillow/Pillow/security/advisories/GHSA-74r2-7ff9-mjj2","tags":["Exploit","Patch","Vendor Advisory","Mitigation"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-112401","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."}