MEDIUM 6.5 PyPI
pypdf: Possible long runtimes for wrong size values in incremental mode
GHSA-4pxv-j86v-mhcw · CVE-2026-41313 · PYSEC-2026-3007
Published · Modified
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Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires loading a PDF with a large trailer /Size value in incremental mode.
Patches
This has been fixed in pypdf==6.10.2.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3735.
References
- WEB https://github.com/py-pdf/pypdf/security/advisories/GHSA-4pxv-j86v-mhcw
- ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-41313
- WEB https://github.com/py-pdf/pypdf/pull/3735
- WEB https://github.com/py-pdf/pypdf/commit/c50a0104cf083356f7c7f5d61410466a57f5c88a
- PACKAGE https://github.com/py-pdf/pypdf
- WEB https://github.com/py-pdf/pypdf/releases/tag/6.10.2
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