Moole Vulnerability Database

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Medium

CVE-2026-40260

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.

VectorNETWORK

PublishedApr 17, 2026, 01:17

Published Bysecurity-advisories@github.com

Base Score

Score5.3

Affected Versions

Package (Ecosystem)IntroducedFixedLimit

pypdf(PyPI)06.10.0N/A

References

https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8
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/security/advisories/GHSA-3crg-w4f6-42mx

Weakness Type

CWE-776

CVSS Metrics

Base Score

6.9

Vector String

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Base SeverityMedium

Version

4.0

Attack Vector (AV)

NETWORK