CVE-2026-49461

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting the text of a page which contains a form XObject with self-references. This vulnerability is fixed in 6.12.2.

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/3805	Issue Tracking Patch
https://github.com/py-pdf/pypdf/releases/tag/6.12.2	Patch Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-j543-4vmf-qm7v	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

25 Jun 2026, 16:48

Type	Values Removed	Values Added
References	~~() https://github.com/py-pdf/pypdf/pull/3805 -~~	() https://github.com/py-pdf/pypdf/pull/3805 - Issue Tracking, Patch
References	~~() https://github.com/py-pdf/pypdf/releases/tag/6.12.2 -~~	() https://github.com/py-pdf/pypdf/releases/tag/6.12.2 - Patch, Release Notes
References	~~() https://github.com/py-pdf/pypdf/security/advisories/GHSA-j543-4vmf-qm7v -~~	() https://github.com/py-pdf/pypdf/security/advisories/GHSA-j543-4vmf-qm7v - 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

22 Jun 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-22 21:16

Updated : 2026-06-25 16:48

NVD link : CVE-2026-49461

Mitre link : CVE-2026-49461

CVE.ORG link : CVE-2026-49461

JSON object : View

Products Affected

pypdf_project

pypdf

CWE

CWE-400

Uncontrolled Resource Consumption

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