CVE-2025-62708

pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has been fixed in pypdf version 6.1.3.

Published: Oct 22, 2025
Updated: Nov 4, 2025
CVE: CVE-2025-62708
GHSA: GHSA-jfx9-29x2-rv3j
Severity: High
Exploit:

CVSS v3:

Severity: High
Score: 7.5
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWEs:

CWE-409

Affected Software
References

Software	From	Fixed in
pypdf	-	6.1.3
pypdf_project / pypdf	-	6.1.3

https://github.com/py-pdf/pypdf/commit/e51d07807ffcdaf18077b9486dadb3dc05b368da
https://github.com/py-pdf/pypdf/pull/3502
https://github.com/py-pdf/pypdf/releases/tag/6.1.3
https://github.com/py-pdf/pypdf/security/advisories/GHSA-jfx9-29x2-rv3j

Vulnerability Database

CVE-2025-62708

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