py-pdf/pypdf · Security
pypdf: Possible large memory usage for large offsets for layout mode text
- GHSA ID
- GHSA-cj93-chg6-vgv8
- CVE ID
- CVE-2026-48155
- Severity
- medium
- Published
- Updated
- CVSS v4
- 4.8 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Description
Impact
An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets.
Patches
This has been fixed in pypdf==6.12.0.
Workarounds
If developers are unable to immediately upgrade, they should consider applying the changes from PR #3790.
CWEs
- CWE-400 · Uncontrolled Resource Consumption