HIGH 8.7 NVD
CVE-2026-102999
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 attachment
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.
References
- https://github.com/py-pdf/pypdf/commit/6b10556d13609a68f9ed18bb29fdd8bba88eb2c3
- https://github.com/py-pdf/pypdf/pull/4081
- https://github.com/py-pdf/pypdf/releases/tag/6.19.0
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-v247-6f48-mgcj
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-09-30 via NVD.
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