{"id":"CVE-2026-102995","title":"pypdf is a free and open-source pure-python PDF library","summary":"pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can place unusually large source-code or destination-string tokens in a font /ToUnicode mapping, causing pypdf/_cmap.py parse_bfchar to decode and re…","severity":"high","cvss":8.7,"cvssVector":"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","cwe":["CWE-400"],"vendor":"py-pdf","product":"pypdf","affected":["pypdf < 6.18.1"],"published":"2026-09-30","updated":"2026-09-30","sourceUpdated":"2026-09-30T21:17:06.713","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102995","references":[{"url":"https://github.com/py-pdf/pypdf/commit/319d0b823ce2c311a2435e9fd93c13994d32bb51","label":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/pull/4071","label":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.18.1","label":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-fp3h-c4fm-7vvf","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-09-30T21:25:07.838Z","slug":"CVE-2026-102995","body":"## Overview\n\npypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can place unusually large source-code or destination-string tokens in a font /ToUnicode mapping, causing pypdf/_cmap.py parse_bfchar to decode and retain oversized values during operations such as text extraction and consume excessive memory. This is a second follow-up to earlier /ToUnicode resource-consumption fixes and is limited to the remaining token-length path. This issue is fixed in version 6.18.1.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}