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CVE-2026-119208 Details

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive time and memory when an application accesses the page count of a crafted encrypted PDF whose page tree declares a forged /Count value. Even after successful decryption, page-count retrieval trusts the unvalidated declared count instead of walking the page tree, allowing the attacker-controlled value to drive excessive work and memory use. This issue is fixed in version 6.21.3.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/py-pdf/pypdf/commit/82b91951dc74496bb3efe6465434f041bb6a5e6b	[email protected]	Patch
https://github.com/py-pdf/pypdf/pull/4270	[email protected]	Patch
https://github.com/py-pdf/pypdf/releases/tag/6.21.3	[email protected]	Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-62m5-6wh8-28x7	[email protected]	PatchVendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-400	Uncontrolled Resource Consumption	[email protected]

Affected Products

Product	Versions
py-pdf pypdf	< 6.21.3
CPE cpe:2.3:a:py-pdf:pypdf:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Nov 4, 2026	CVE Modified	CISA-ADP
Nov 2, 2026	CPE Deprecation Remap	[email protected]
Nov 2, 2026	Initial Analysis	[email protected]
Oct 29, 2026	New CVE Received	[email protected]