CVE-2026-48155

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.

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 NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/py-pdf/pypdf/pull/3790	Issue Tracking Patch
https://github.com/py-pdf/pypdf/releases/tag/6.12.0	Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-cj93-chg6-vgv8	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

14 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) pypdf es una biblioteca PDF de Python puro, gratuita y de código abierto. Antes de la versión 6.12.0, un atacante que utiliza esta vulnerabilidad puede crear un PDF que provoca un gran uso de memoria. Esto requiere extraer texto en modo de diseño con grandes desplazamientos de caracteres. Esta vulnerabilidad está corregida en la versión 6.12.0.

Information

Published : 2026-05-28 16:16

Updated : 2026-10-14 20:10

NVD link : CVE-2026-48155

Mitre link : CVE-2026-48155

CVE.ORG link : CVE-2026-48155

JSON object : View

Products Affected

pypdf_project

pypdf

CWE

CWE-400

Uncontrolled Resource Consumption

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