Vulnerability · Published Aug 27, 2026 · Assigned by Hackrate
CVE-2026-79988Authenticated RCE through Twig sandbox escape
High 8.7
In plain English
A high-severity security flaw in cms from craftcms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities).
Severity (CVSS 4.0)8.7High
Exploit odds (30 days)0.5%top 60.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
Weakness: CWE-693 · Vector: 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
References
- https://www.hckrt.com/hacktivity/HCKRT-8RQQ7K third-party-advisory, technical-description, mitigation
- https://github.com/craftcms/cms/releases/tag/5.10.7 release-notes
- https://github.com/craftcms/cms product