{"id":"CVE-2026-102999","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 6.19.0, a crafted PDF containing many embedded files can cause the dictionary-based attachments API in pypdf/_doc_common.py to reparse the full attachment list for each co…","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","CWE-407"],"vendor":"py-pdf","product":"pypdf","affected":["pypdf < 6.19.0"],"published":"2026-09-30","updated":"2026-09-30","sourceUpdated":"2026-09-30T21:17:07.343","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-102999","references":[{"url":"https://github.com/py-pdf/pypdf/commit/6b10556d13609a68f9ed18bb29fdd8bba88eb2c3","label":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/pull/4081","label":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.19.0","label":"security-advisories@github.com"},{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-v247-6f48-mgcj","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-09-30T21:25:07.840Z","slug":"CVE-2026-102999","body":"## Overview\n\npypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF containing many embedded files can cause the dictionary-based attachments API in pypdf/_doc_common.py to reparse the full attachment list for each content lookup, producing repeated work and long runtimes when an application accesses the embedded-file mapping. This issue is fixed in version 6.19.0.\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":[]}