CVE-2025-62708
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductPypdf
PublishedOct 22, 2025
First seenOct 22, 2025
Weakness typeCWE-409CWE-409
How to fix
Update
- pypdf_project pypdf6.1.3 or later
- pypdf6.1.3 or later
- py-pdf pypdf6.1.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pypdf_project pypdf | v < 6.1.3 | 6.1.3 |
| pypdfPyPI | v < 6.1.3 | 6.1.3 |
| py-pdf pypdf | v < 6.1.3 | 6.1.3 |
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