# CVE-2026-41313

## Summary

- **CVE ID:** CVE-2026-41313
- **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:** Apr 22, 2026
- **Last Modified:** Apr 23, 2026

## Description

pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to long runtimes. This requires loading a PDF with a large trailer `/Size` value in incremental mode. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

## Affected Products

- py-pdf — pypdf (< 6.10.2)

## References

- [CNA](https://github.com/py-pdf/pypdf/security/advisories/GHSA-4pxv-j86v-mhcw)
- [CNA](https://github.com/py-pdf/pypdf/pull/3735)
- [CNA](https://github.com/py-pdf/pypdf/commit/c50a0104cf083356f7c7f5d61410466a57f5c88a)
- [CNA](https://github.com/py-pdf/pypdf/releases/tag/6.10.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 11.7

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