HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-33699 — pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.2...

Friday, March 27, 2026 at 01:16 AM UTC·Source: NIST NVD

Updated: Thursday, April 2, 2026 at 05:46 PM UTC

Executive Summary

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.

Analysis

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. CVSS Score: 7.5. Published: 2026-03-27T01:16:19.147.

Indicators of Compromise (1)

CVE (1)
CVE-2026-33699
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Mar 27, 2026. Verified by: NIST.

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