CVE-2026-48735

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.

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/3796	Issue Tracking Patch
https://github.com/py-pdf/pypdf/releases/tag/6.12.1	Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-wjqc-6w8f-h24c	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
First Time		Pypdf Project Pypdf Project pypdf
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
References	~~() https://github.com/py-pdf/pypdf/pull/3796 -~~	() https://github.com/py-pdf/pypdf/pull/3796 - Issue Tracking, Patch
References	~~() https://github.com/py-pdf/pypdf/releases/tag/6.12.1 -~~	() https://github.com/py-pdf/pypdf/releases/tag/6.12.1 - Release Notes
References	~~() https://github.com/py-pdf/pypdf/security/advisories/GHSA-wjqc-6w8f-h24c -~~	() https://github.com/py-pdf/pypdf/security/advisories/GHSA-wjqc-6w8f-h24c - Patch, Vendor Advisory
CPE		cpe:2.3:a:pypdf_project:pypdf::::::::

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-2026-48735

Mitre link : CVE-2026-48735

CVE.ORG link : CVE-2026-48735

JSON object : View

Products Affected

pypdf_project

pypdf

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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