CVE-2026-124430
Craft CMS 5.10.0 before 5.11.2 RCE via app/render-elements Signing Oracle
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
Craft CMS from 5.10.0 before 5.11.2 contains a remote code execution vulnerability that allows non-administrator control panel users to obtain HMAC-signed Twig templates via the app/render-elements endpoint. Attackers can submit the signed templated returnUrl as the login redirect parameter, triggering unsandboxed renderObjectTemplate() evaluation and executing OS commands as the PHP worker.
| CWE | CWE-1336 |
| Vendor | craftcms |
| Product | cms |
| Published | Nov 8, 2026 |
Stay Ahead of the Next One
Get instant alerts for craftcms cms
Be the first to know when new high vulnerabilities affecting craftcms cms are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
craftcms / cms
5.10.0 < 5.11.2
References
Credits
0xkalawy