CVE-2026-40260

Published: Apr 17, 2026 Last Modified: Apr 17, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,9
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

pypdf is a free and open-source pure-python PDF library. In versions prior to 6.10.0, manipulated XMP metadata entity declarations can exhaust RAM. An attacker who exploits this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata. This issue has been fixed in version 6.10.0.

776

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Other)
Applicable Platforms
Languages: Not Language-Specific, XML
Likelihood of Exploit: Medium
View CWE Details
https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e…
https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8
https://github.com/py-pdf/pypdf/pull/3724
https://github.com/py-pdf/pypdf/pull/3724
https://github.com/py-pdf/pypdf/releases/tag/6.10.0
https://github.com/py-pdf/pypdf/releases/tag/6.10.0
https://github.com/py-pdf/pypdf/security/advisories/GHSA-3c…
https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx