# CVE-2026-76956

## Summary

- **CVE ID:** CVE-2026-76956
- **Severity:** MEDIUM
- **CVSS Score:** 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-394
- **Published:** Aug 20, 2026
- **Last Modified:** Aug 20, 2026

## Description

In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy's return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.

## Affected Products

- libexpat project — libexpat (2.8.2)

## References

- [CNA](https://github.com/libexpat/libexpat/pull/1326)
- [CNA](https://github.com/libexpat/libexpat/pull/1329)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 21.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-12._