pypdf: pypdf is a free and open-source pure-python PDF library
CVE-2025-55197 is fixed in pypdf on 1 platform by DEBIAN-CVE-2025-55197 (version 6.9.0-1), released August 13, 2025. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| pypdf · Debian 14 | 6.9.0-1 | DEBIAN-CVE-2025-55197 | Aug 13, 2025 |
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