VULNERABILITY INTELLIGENCE

CVE-2026-33699

CVSS score7.5 HIGH
EPSS probability0.47%
CISA KEVNot currently listed
Published2026-03-27
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.2 have a vulnerability in which an attacker can craft a PDF which leads to an infinite loop. This requires reading a file in non-strict mode. This has been fixed in pypdf 6.9.2. If users cannot upgrade yet, consider applying the changes from the patch manually.

Weakness classification

  • security-advisories@github.com: CWE-835

Primary references