CVE-2025-55197: PyPDF's Manipulated FlateDecode streams can exhaust RAM
(updated )
An attacker who uses this vulnerability 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.
References
- github.com/advisories/GHSA-7hfw-26vp-jp8m
- github.com/py-pdf/pypdf
- github.com/py-pdf/pypdf/blob/0dd57738bbdcdb63f0fb43d8a6b3d222b6946595/pypdf/filters.py
- github.com/py-pdf/pypdf/issues/3429
- github.com/py-pdf/pypdf/pull/3430
- github.com/py-pdf/pypdf/releases/tag/6.0.0
- github.com/py-pdf/pypdf/security/advisories/GHSA-7hfw-26vp-jp8m
- nvd.nist.gov/vuln/detail/CVE-2025-55197
Code Behaviors & Features
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