CVE-2026-49460

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 long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor. This vulnerability is fixed in 6.12.2.

CVSS v3 3.3 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/py-pdf/pypdf/pull/3806	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-5hgr-hg42-57jg	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

25 Jun 2026, 16:51

Type	Values Removed	Values Added
References	~~() https://github.com/py-pdf/pypdf/pull/3806 -~~	() https://github.com/py-pdf/pypdf/pull/3806 - 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-5hgr-hg42-57jg -~~	() https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hgr-hg42-57jg - Patch, Vendor Advisory
CPE		cpe:2.3:a:pypdf_project:pypdf::::::::
First Time		Pypdf Project Pypdf Project pypdf
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 3.3

22 Jun 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-22 21:16

Updated : 2026-06-25 16:51

NVD link : CVE-2026-49460

Mitre link : CVE-2026-49460

CVE.ORG link : CVE-2026-49460

JSON object : View

Products Affected

pypdf_project

pypdf

CWE

CWE-407

Inefficient Algorithmic Complexity

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