{"id":"CVE-2026-112391","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-112391","generatedAt":"2026-10-28T04:18:09.376Z","title":"The parser follows attacker-controlled arrays and dictionaries when an existing PDF is opened for append.","description":"Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow's PdfParser.get_value() can recurse without a limit while reading nested PDF objects. The parser follows attacker-controlled arrays and dictionaries when an existing PDF is opened for append. An attacker can provide a deeply nested PDF to an application that saves an image with PDF append enabled. This can raise an uncaught RecursionError or terminate the worker, causing denial of service. This issue is fixed in version 13.0.0.","published":"2026-10-19T21:17:07.000Z","lastModified":"2026-10-23T17:00:32.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":6.3,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/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-835"],"affected":["python/pillow"],"epss":{"score":0.00581,"percentile":0.47554,"date":"2026-10-27","history":[{"date":"2026-10-20","score":0.00291,"percentile":0.20415}]},"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 (0.58%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-19T21:17:07.000Z","detail":{"score":"6.3","severity":"MEDIUM","publishedAt":"2026-10-19T21:17:07.477Z"},"summary":"New CVE, medium severity (CVSS 6.3)."}],"references":[{"url":"https://github.com/python-pillow/Pillow/commit/94cb11c44ff7345414da17ebfea1598a529ad9cd","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-254f-3936-288h","tags":["Exploit","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-112391","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."}