Description


pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to long runtimes. This requires loading a PDF with a large trailer `/Size` value in incremental mode. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

Related CPE's


Weaknesses



CWE-834

CVSS impact metrics


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

6.5 · Medium

Information


Source identifier

[email protected]

Vulnerability status

Analyzed

Published

2026-04-22T22:16:32.220Z

5 months ago

Last modified

2026-06-17T10:46:29.350Z

3 months ago