PT-2026-49730 · Pypi · Pypdf

Published 2026-06-16 · Updated 2026-06-16 · CVE-2026-49461

OSV

CVSS v4.0

6.9

Medium

Base vector

AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Impact

An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting the text of a page which contains a form XObject with self-references.

Patches

This has been fixed in pypdf==6.12.2.

Workarounds

If you cannot upgrade yet, consider applying the changes from PR #3805.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2026-49461

GHSA-J543-4VMF-QM7V

Affected Products

Pypdf

References · 5

• https://osv.dev/vulnerability/GHSA-j543-4vmf-qm7v · Vendor Advisory
• https://github.com/py-pdf/pypdf/pull/3805 · Note
• https://github.com/py-pdf/pypdf/releases/tag/6.12.2 · Note
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-j543-4vmf-qm7v · Note
• https://github.com/py-pdf/pypdf · Note