CVE-2026-102999
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductPypdf
PublishedSep 30, 2026
First seenSep 30, 2026
How to fix
Update
- pypdf_project pypdf6.19.0 or later
- pypdf6.19.0 or later
- py-pdf pypdf6.19.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pypdf_project pypdf | v < 6.19.0 | 6.19.0 |
| pypdfPyPI | v < 6.19.0 | 6.19.0 |
| py-pdf pypdf | v < 6.19.0 | 6.19.0 |
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