{"id":"CVE-2026-112891","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-112891","generatedAt":"2026-10-28T05:28:11.102Z","title":"An attacker can supply an image with a large GIF comment to an application that saves it as GIF.","description":"Pillow is a Python imaging library. From 9.2.0 until 13.0.0, Pillow performs quadratic copying when saving a GIF with a long comment. _get_global_header() repeatedly copies portions of comment data while assembling the global header, including comments retained from an untrusted input image. An attacker can supply an image with a large GIF comment to an application that saves it as GIF. This can consume excessive CPU and delay or deny service. This issue is fixed in version 13.0.0.","published":"2026-10-19T22:17:09.000Z","lastModified":"2026-10-27T14:59:44.000Z","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":"2026-10-19T22:17:09.000Z","detail":{"score":"6.9","severity":"MEDIUM","publishedAt":"2026-10-19T22:17:08.640Z"},"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-fc9g-5qg7-mf45","tags":["Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-112891","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."}