CVE-2026-33699

Updated on 25 Mar 2026

Severity

4.6 Medium severity

Details

CVSS score
4.6
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Overview

About vulnerability

Impact

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading a file in non-strict mode.

Patches

This has been fixed in pypdf==6.9.2.

Workarounds

If users cannot upgrade yet, consider applying the changes from PR #3693.

Details

Affected product:
pypdf
Affected packages:
pypdf @ 5.9.0