Description
pypdf is a free and open-source pure-python PDF library. Prior to version 6.0.0, an attacker can craft a PDF which leads to the RAM being exhausted. This requires just reading the file if a series of FlateDecode filters is used on a malicious cross-reference stream. Other content streams are affected on explicit access. This issue has been fixed in 6.0.0. If an update is not possible, a workaround involves including the fixed code from pypdf.filters.decompress into the existing filters file.
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| pypdf | — | — |
| pypdf2 | — | — |
References
Similar Threats
- Unknown CVE-2026-33123
- Unknown CVE-2026-31826
- Unknown CVE-2026-28804
- Unknown CVE-2026-28351
- Unknown CVE-2026-27888
Exploit Protection
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