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CVE-2026-115580 Details

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. This issue is fixed in version 6.21.2.

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/a3061e34b169d34478d520f5f049c53cfb1482b2	[email protected]
https://github.com/py-pdf/pypdf/pull/4239	[email protected]
https://github.com/py-pdf/pypdf/releases/tag/6.21.2	[email protected]
https://github.com/py-pdf/pypdf/security/advisories/GHSA-gmh7-3g9r-mjh5	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-834	Excessive Iteration	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

Date	Action	Recorded By
Nov 2, 2026	CPE Deprecation Remap	[email protected]
Oct 29, 2026	CVE Modified	CISA-ADP
Oct 23, 2026	New CVE Received	[email protected]