high7.5
CVE-2026-102999
pypdf: Possible long runtimes with large amount of embedded files
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | pypdf | < 6.19.0 | 6.19.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Pypdf Project | Pypdf | before 6.19.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-v247-6f48-mgcj
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-v247-6f48-mgcj
- https://nvd.nist.gov/vuln/detail/CVE-2026-102999
- https://github.com/py-pdf/pypdf/pull/4081
- https://github.com/py-pdf/pypdf/commit/6b10556d13609a68f9ed18bb29fdd8bba88eb2c3
- https://github.com/py-pdf/pypdf/releases/tag/6.19.0