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CVE-2026-102997 Details

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF containing a partially malformed /FlateDecode stream with padded data can force pypdf/filters.py to use inefficient byte-by-byte decompression while the earlier recovery counter fails to advance for bytes that successfully decode, causing long runtimes and application unavailability. This is a residual issue after the malformed FlateDecode recovery fix. This issue is fixed in version 6.18.1.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/py-pdf/pypdf/commit/d9d38cf99b115deb562d3b68f36c33027bc04f79	[email protected]
https://github.com/py-pdf/pypdf/pull/4073	[email protected]
https://github.com/py-pdf/pypdf/releases/tag/6.18.1	[email protected]
https://github.com/py-pdf/pypdf/security/advisories/GHSA-jw7q-gvrg-4vj3	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-400	Uncontrolled Resource Consumption	[email protected]
CWE-407	Inefficient Algorithmic Complexity	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes