CVE-2026-79988
Received Received - Intake

Authenticated Remote Code Execution in Craft CMS via Twig Sandbox Bypass

Publication date: 2026-08-27

Last updated on: 2026-08-27

Assigner: Hackrate

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.

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Meta Information

Published
2026-08-27
Last Modified
2026-08-27
Generated
2026-08-27
AI Q&A
2026-08-27
EPSS Evaluated
N/A
NVD
CVE-2026-79988
EUVD
EUVD-2026-67081

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
craftcms craft_cms *
craftcms cms 5.10.7

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-693 The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

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Executive Summary

The vulnerability involves the Twig sandbox mechanism in Craft CMS being misconfigured to allow dangerous Yii framework functionality. This enables authenticated remote code execution (RCE) similar to previously disclosed issues.

Impact Analysis

An attacker with authenticated access could execute arbitrary code on the server hosting Craft CMS. This may lead to full system compromise, data theft, or further network infiltration depending on the server's configuration.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR's data protection requirements and HIPAA's security rules. Organizations may face fines, legal action, and reputational damage if exploited.

Mitigation Strategies

Update Craft CMS to the latest version immediately to patch the Twig sandbox vulnerability. Disable dangerous Yii framework functionality in Twig templates if custom configurations are in use. Review and restrict user permissions to minimize attack surface for authenticated RCE.

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