CVE-2026-40260

UNKNOWN 0.0

pypdf: Manipulated XMP metadata entity declarations can exhaust RAM

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-776
Vendor	py-pdf
Product	pypdf
Published	Apr 16, 2026

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Affected Versions

py-pdf / pypdf

< 6.10.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx github.com: https://github.com/py-pdf/pypdf/pull/3724 github.com: https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8 github.com: https://github.com/py-pdf/pypdf/releases/tag/6.10.0