CVE-2026-40260

MEDIUM6.9

pypdf: Manipulated XMP metadata entity declarations can exhaust RAM

Published Apr 16, 2026

Modified 4 days ago

Details

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.

References

WEB

https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8

WEB

https://github.com/py-pdf/pypdf/pull/3724

WEB

https://github.com/py-pdf/pypdf/releases/tag/6.10.0

WEB

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

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-40260

CVSS Analysis