PT-2026-105898 · Pypi · Pypdf
Published
2026-10-01
·
Updated
2026-10-01
CVSS v4.0
8.7
High
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
Impact
An attacker who uses this vulnerability can craft a PDF which leads to large memory consumption. This requires parsing the
/ToUnicode entry of a font with unusually large values, for example during text extraction.Patches
This has been fixed in pypdf==6.18.1.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #4071.
Fix
Found an issue in the description? Have something to add? Feel free to write us 👾
Related Identifiers
Affected Products
Pypdf