CVE-2026-71852
pypdf: Possible long runtimes/large memory usage for large CID font width ranges
- State
- Published
- Severity
- 4.8 Medium
- Published
- Aug 7, 2026
- Updated
- Aug 10, 2026
- Reserved
- Aug 7, 2026
Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/_font.py function Font._collect_cid_character_widths expands unusually large CID font /W width ranges or excessive width entries during text extraction. This issue is fixed in 6.15.0.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | 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 | GitHub_M |
Weaknesses
- CWE-834 Excessive Iteration
Affected Products
| Product | Versions |
|---|---|
pypdfpy-pdf |
|
References
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