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.

INFO

Published Date :

2025-08-13T23:03:02.018Z

Last Modified :

2025-08-14T14:50:48.663Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-55197 vulnerability.

Vendors Products
Pypdf Project
  • Pypdf
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-55197.

URL Resource
https://github.com/py-pdf/pypdf/blob/0dd57738bbdcdb63f0fb43d8a6b3d222b6946595/pypdf/filters.py#L72-L143 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/issues/3429 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/pull/3430 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/releases/tag/6.0.0 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/security/advisories/GHSA-7hfw-26vp-jp8m cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-55197 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-55197 cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact