# CVE-2026-41168

## Summary

- **CVE ID:** CVE-2026-41168
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/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 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large `/Size` values or object streams with wrong large `/N` values. This has been fixed in pypdf 6.10.1. As a workaround, one may apply the changes from the patch manually.

## Affected Products

- py-pdf — pypdf (< 6.10.1)

## References

- [CNA](https://github.com/py-pdf/pypdf/security/advisories/GHSA-jj6c-8h6c-hppx)
- [CNA](https://github.com/py-pdf/pypdf/pull/3733)
- [CNA](https://github.com/py-pdf/pypdf/commit/62338e9d36419cf193ccec7331784f45df1d70b3)
- [CNA](https://github.com/py-pdf/pypdf/releases/tag/6.10.1)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.30%
- **EPSS Percentile:** 22.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._