CVE-2026-41313

Description

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to long runtimes. This requires loading a PDF with a large trailer `/Size` value in incremental mode. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

PUBLISHED Reserved 2026-04-20 | Published 2026-04-22 | Updated 2026-04-23 | Assigner GitHub_M

Problem types

CWE-834: Excessive Iteration

Product status

References

github.com/.../pypdf/security/advisories/GHSA-4pxv-j86v-mhcw

github.com/py-pdf/pypdf/pull/3735

github.com/...ommit/c50a0104cf083356f7c7f5d61410466a57f5c88a

github.com/py-pdf/pypdf/releases/tag/6.10.2

cve.org (CVE-2026-41313)

nvd.nist.gov (CVE-2026-41313)

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