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

29 May 2026, 19:38

Type	Values Removed	Values Added
References	~~() https://github.com/py-pdf/pypdf/pull/3790 -~~	() https://github.com/py-pdf/pypdf/pull/3790 - Issue Tracking, Patch
References	~~() https://github.com/py-pdf/pypdf/releases/tag/6.12.0 -~~	() https://github.com/py-pdf/pypdf/releases/tag/6.12.0 - Release Notes
References	~~() https://github.com/py-pdf/pypdf/security/advisories/GHSA-cj93-chg6-vgv8 -~~	() https://github.com/py-pdf/pypdf/security/advisories/GHSA-cj93-chg6-vgv8 - Patch, Vendor Advisory
First Time		Pypdf Project Pypdf Project pypdf
CPE		cpe:2.3:a:pypdf_project:pypdf::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5

28 May 2026, 16:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-28 16:16

Updated : 2026-05-29 19:38

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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