CVE-2026-41314

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 the RAM being exhausted. This requires accessing an image using `/FlateDecode` with large size values. 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-789: Memory Allocation with Excessive Size Value

Product status

References

github.com/.../pypdf/security/advisories/GHSA-x284-j5p8-9c5p

github.com/py-pdf/pypdf/pull/3734

github.com/...ommit/ac734dab4eef92bcce50d503949b4d9887d89f11

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

cve.org (CVE-2026-41314)

nvd.nist.gov (CVE-2026-41314)

Download JSON