MEDIUM 5.3 PyPI
pypdf: Manipulated XMP metadata entity declarations can exhaust RAM
GHSA-3crg-w4f6-42mx · CVE-2026-40260 · PYSEC-2026-3006
Published · Modified
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Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata.
Patches
This has been fixed in pypdf==6.10.0.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3724.
References
- WEB https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-40260
- WEB https://github.com/py-pdf/pypdf/pull/3724
- WEB https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8
- PACKAGE https://github.com/py-pdf/pypdf
- WEB https://github.com/py-pdf/pypdf/releases/tag/6.10.0
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