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VULNERABILITIES

CVE-2026-33699 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/py-pdf/pypdf/pull/3693 [email protected]Issue TrackingPatch
https://github.com/py-pdf/pypdf/releases/tag/6.9.2 [email protected]ProductRelease Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-87mj-5ggw-8qc3 [email protected]PatchVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')[email protected]

Affected Products

ProductVersions
pypdf project pypdf
< 6.9.2

CPE

  • cpe:2.3:a:pypdf_project:pypdf:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-33699
NVD Published Date:
Mar 27, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-33699 Details - Not Deferred