{"id":"CVE-2026-112406","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-112406","generatedAt":"2026-10-28T04:34:57.526Z","title":"An attacker can supply a cyclic PDF to an application that appends an image to that PDF.","description":"Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow can enter an infinite loop while rewriting PDF pages. PdfParser.rewrite_pages() follows Parent relationships without detecting a cycle in the page tree. An attacker can supply a cyclic PDF to an application that appends an image to that PDF. This can hold the worker at full CPU and deny service. This issue is fixed in version 13.0.0.","published":"2026-10-19T22:17:08.000Z","lastModified":"2026-10-27T14:59:52.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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":0.00417,"percentile":0.35873,"date":"2026-10-27","history":[{"date":"2026-10-20","score":0.00291,"percentile":0.20417}]},"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 (0.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-19T22:17:08.000Z","detail":{"score":"8.7","severity":"HIGH","publishedAt":"2026-10-19T22:17:08.153Z"},"summary":"New CVE, high severity (CVSS 8.7)."}],"references":[{"url":"https://github.com/python-pillow/Pillow/commit/b3ebf20c694f2f12537a629c30229a1d5a53f777","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-f2g6-542v-9j58","tags":["Exploit","Mitigation","Patch","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-112406","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."}