# CVE-2026-71852

## Summary

- **CVE ID:** CVE-2026-71852
- **Severity:** MEDIUM
- **CVSS Score:** 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)
- **CWE:** CWE-834
- **Published:** Aug 7, 2026
- **Last Modified:** Aug 10, 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.

## Affected Products

- py-pdf — pypdf (< 6.15.0)

## References

- [CNA](https://github.com/py-pdf/pypdf/security/advisories/GHSA-fwg2-594c-jp42)
- [CNA](https://github.com/py-pdf/pypdf/pull/3946)
- [CNA](https://github.com/py-pdf/pypdf/commit/51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7)
- [CNA](https://github.com/py-pdf/pypdf/releases/tag/6.15.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.13%
- **EPSS Percentile:** 2.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._