CVE-2026-57204

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.3, a maliciously crafted PDF can cause DoS. An attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as MAX_DECLARED_STREAM_LENGTH is sometimes ignored. This requires parsing a content stream without a /Length value. This issue has been fixed in version 6.13.3.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

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/releases/tag/6.13.3	Product Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-jm82-fx9c-mx94	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

06 Jul 2026, 16:21

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.5
CPE		cpe:2.3:a:pypdf_project:pypdf::::::::
References	~~() https://github.com/py-pdf/pypdf/releases/tag/6.13.3 -~~	() https://github.com/py-pdf/pypdf/releases/tag/6.13.3 - Product, Release Notes
References	~~() https://github.com/py-pdf/pypdf/security/advisories/GHSA-jm82-fx9c-mx94 -~~	() https://github.com/py-pdf/pypdf/security/advisories/GHSA-jm82-fx9c-mx94 - Patch, Vendor Advisory
First Time		Pypdf Project Pypdf Project pypdf

30 Jun 2026, 22:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-30 22:16

Updated : 2026-07-06 16:21

NVD link : CVE-2026-57204

Mitre link : CVE-2026-57204

CVE.ORG link : CVE-2026-57204

JSON object : View

Products Affected

pypdf_project

pypdf

CWE

CWE-400

Uncontrolled Resource Consumption

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