CVE-2026-48155

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.

PUBLISHED Reserved 2026-05-20 | Published 2026-05-28 | Updated 2026-05-28 | Assigner GitHub_M

Problem types

CWE-400: Uncontrolled Resource Consumption

Product status

References

github.com/.../pypdf/security/advisories/GHSA-cj93-chg6-vgv8

github.com/py-pdf/pypdf/pull/3790

github.com/py-pdf/pypdf/releases/tag/6.12.0

cve.org (CVE-2026-48155)

nvd.nist.gov (CVE-2026-48155)

Download JSON