{"id":"CVE-2026-113793","aliases":[],"cve":{"records":[{"id":"CVE-2026-113793","source":"GitHub_M","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-20T17:39:41.373Z","published":"2026-10-21T15:57:55.600Z","modified":"2026-10-28T17:01:30.870Z"}],"publishers":[{"name":"GitHub_M","role":"CNA","organizationId":"a0819718-46f1-4df5-94e2-005712e83aaa","modified":"2026-10-21T15:57:55.600Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-28T17:01:30.870Z"}],"references":[{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-9mx8-4j7g-633p","tags":["x_refsource_CONFIRM"],"source":"GitHub_M"},{"url":"https://github.com/py-pdf/pypdf/pull/4188","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/py-pdf/pypdf/commit/c9c35b4471c2eb5fe078094f6c816e69d4ed25a0","tags":["x_refsource_MISC"],"source":"GitHub_M"},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.20.1","tags":["x_refsource_MISC"],"source":"GitHub_M"}],"weaknesses":[{"id":"CWE-835","description":"CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')","source":"GitHub_M"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-28T16:51:43.110456Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"pypdf: Possible infinite loop when removing tree items","titleSource":"GitHub_M","descriptionSource":"GitHub_M","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.","score":6,"severity":"medium","published":"2026-10-21T15:57:55.600Z","modified":"2026-10-28T17:01:30.870Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"py-pdf","name":"pypdf","platforms":[],"versions":[{"version":"< 6.20.1","status":"affected"}],"cpes":[],"source":"GitHub_M","url":"https://www.cve.org/CVERecord?id=CVE-2026-113793"}],"remediation":[],"references":["https://github.com/py-pdf/pypdf/security/advisories/GHSA-9mx8-4j7g-633p","https://github.com/py-pdf/pypdf/pull/4188","https://github.com/py-pdf/pypdf/commit/c9c35b4471c2eb5fe078094f6c816e69d4ed25a0","https://github.com/py-pdf/pypdf/releases/tag/6.20.1"],"sources":[{"name":"CVE","id":"CVE-2026-113793","modified":"2026-10-28T17:01:30.870Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-113793"}],"assessments":[{"source":"GitHub_M","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":6}],"sourceAffected":[],"observedAt":"2026-10-29T14:32:40.687Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T08:55:34.575Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-28T17:15:31.077Z","attemptedAt":"2026-10-28T17:15:31.077Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-28T17:15:31.077Z","attemptedAt":"2026-10-28T17:15:31.077Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-28T17:15:31.077Z","attemptedAt":"2026-10-28T17:15:31.077Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-28T17:15:31.077Z","attemptedAt":"2026-10-28T17:15:31.077Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-113793","url":"https://www.first.org/epss/","probability":0.00466,"percentile":0.40227,"date":"2026-10-28","checkedAt":"2026-10-28T17:15:31.077Z"},{"source":"NVD","id":"CVE-2026-113793","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113793","modified":"2026-10-22T16:46:48.920","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","checkedAt":"2026-10-28T17:15:31.077Z"},{"source":"GitHub Advisory Database","id":"GHSA-9mx8-4j7g-633p","url":"https://github.com/advisories/GHSA-9mx8-4j7g-633p","modified":"2026-10-21T16:55:12Z","checkedAt":"2026-10-28T17:15:31.077Z"},{"source":"ENISA EUVD","id":"EUVD-2026-107334","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-107334","modified":"Oct 21, 2026, 3:57:55 PM","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","checkedAt":"2026-10-28T17:15:31.077Z"}],"aiSummary":{"text":"pypdf versions prior to 6.20.1 may enter an infinite loop when removing objects from crafted cyclic PDF trees, blocking the process. The issue is caused by a loop with an unreachable exit condition. It is fixed in version 6.20.1.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:07:16.184Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-113793"}]}}