CVE-2026-48735

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.

PUBLISHED Reserved 2026-05-22 | Published 2026-05-28 | Updated 2026-06-02 | Assigner GitHub_M

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

References

github.com/.../pypdf/security/advisories/GHSA-wjqc-6w8f-h24c

github.com/py-pdf/pypdf/pull/3796

github.com/py-pdf/pypdf/releases/tag/6.12.1

cve.org (CVE-2026-48735)

nvd.nist.gov (CVE-2026-48735)

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