Description
pypdf is a free and open-source pure-python PDF library. Prior to version 6.4.0, an attacker who uses this vulnerability can craft a PDF which leads to a memory usage of up to 1 GB per stream. This requires parsing the content stream of a page using the LZWDecode filter. This issue has been patched in version 6.4.0.
Details
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| pypdf | โ | 6.4.0 |
| unknown | โ | โ |
References
Similar Threats
- Unknown CVE-2026-33123
- Unknown CVE-2026-31826
- Unknown CVE-2026-28804
- Unknown CVE-2026-28351
- Unknown CVE-2026-27888
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