# CVE-2026-79988

## Summary

- **CVE ID:** CVE-2026-79988
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-693
- **Published:** Aug 27, 2026
- **Last Modified:** Aug 28, 2026

## Description

The Twig sandbox mechanism in Craft CMS is configured to allow dangerous functionality from the Yii framework, leading to authenticated RCE similar to previously disclosed vulnerabilities.

## Affected Products

- craftcms — cms (4.0.0-RC1)
- craftcms — cms (5.0.0-RC1)

## References

- [CNA](https://www.hckrt.com/hacktivity/HCKRT-8RQQ7K)
- [CNA](https://github.com/craftcms/cms/releases/tag/5.10.7)
- [CNA](https://github.com/craftcms/cms)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.26%
- **EPSS Percentile:** 17.6

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