CVE-2026-54531

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.0, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with outlines into a writer. This vulnerability is fixed in 6.13.0.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/py-pdf/pypdf/pull/3830	Issue Tracking Patch
https://github.com/py-pdf/pypdf/releases/tag/6.13.0	Patch Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-m2v9-299j-rv96	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pypdf_project:pypdf:*:*:*:*:*:*:*:*

History

25 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) pypdf es una biblioteca PDF de Python puro, gratuita y de código abierto. Antes de la versión 6.13.0, un atacante que utiliza esta vulnerabilidad puede crear un PDF que provoca un bucle infinito. Esto requiere fusionar un archivo con esquemas en un escritor. Esta vulnerabilidad está corregida en la versión 6.13.0.

Information

Published : 2026-06-22 21:16

Updated : 2026-10-25 23:10

NVD link : CVE-2026-54531

Mitre link : CVE-2026-54531

CVE.ORG link : CVE-2026-54531

JSON object : View

Products Affected

pypdf_project

pypdf

CWE

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

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