{"id":"CVE-2026-102999","aliases":["GHSA-v247-6f48-mgcj","PYSEC-2026-4159"],"url":"https://o3.security/vulnerability/CVE-2026-102999","summary":"pypdf: Possible long runtimes with large amount of embedded files","details":"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 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.","published":"2026-09-30T20:10:38.433Z","modified":"2026-10-03T03:30:54.690131411Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"pypdf","fixedVersion":"6.19.0"}],"fix":{"url":"https://github.com/py-pdf/pypdf/commit/6b10556d13609a68f9ed18bb29fdd8bba88eb2c3","label":"py-pdf/pypdf@6b10556"},"references":[{"type":"WEB","url":"https://github.com/py-pdf/pypdf/releases/tag/6.19.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102999.json"},{"type":"ADVISORY","url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-v247-6f48-mgcj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102999"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/commit/6b10556d13609a68f9ed18bb29fdd8bba88eb2c3"},{"type":"FIX","url":"https://github.com/py-pdf/pypdf/pull/4081"},{"type":"PACKAGE","url":"https://github.com/py-pdf/pypdf"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-03T03:30:54.690131411Z"}}