Remote code execution in Craft CMS via Twig sandbox escape
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-94.
Summary
Craft CMS from 5.0.0 before 5.11.0 contains a remote code execution flaw caused by improper control of code generation (CWE-94). An authenticated Control Panel user with low privileges can escape the Twig sandbox by passing uncleansed criteria to getNext, getPrev, or getOwners. Injected Yii "as" or "on" config keys attach malicious event handlers that run when the element query executes, giving code execution as the web user.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Craft CMS from 5.0.0 before 5.11.0 contains a remote code execution vulnerability that allows authenticated Control Panel users to escape the Twig sandbox by passing uncleansed criteria to getNext, getPrev, or getOwners. Attackers can inject Yii "as" or "on" config keys to attach malicious event handlers that execute when the element query runs, achieving code execution as the web user.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade Craft CMS to version 5.11.0, which fixes the vulnerability.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA cms (craftcms) Fixed in 5.11.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
craftcms cms 5.11.0
8 records Highest priority Priority MEDIUM 7 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-76615 Craft CMS GraphQL Site-Scope Bypass via MutationsPriority MEDIUM 48
- TI-2026-76616 Craft CMS Twig create() blocklist bypass allows remote code executionPriority MEDIUM 45
- TI-2026-76614 Verification code reuse in Craft CMS allows account takeoverPriority MEDIUM 44
Timeline
- 2026-10-20 Threatist record created from CVE-2026-112773
- 2026-10-20 Alias added: GHSA-8vpq-j4mg-h24p
- 2026-10-21 Priority changed: LOW → MEDIUM
References
More Craft CMS vulnerabilities
- TI-2025-23503 Craft CMS Allows Remote Code Execution KEVCVSS 3.1CRITICAL 10.0
- TI-2024-37138 RCE when PHP `register_argc_argv` config setting is enabled in craftcms/cms KEVCVSS 4.0CRITICAL 9.3
- TI-2025-16994 Potential RCE with a compromised security key in craft/cms KEVCVSS 3.1HIGH 8.1
- TI-2025-24595 Craft CMS stores user-provided content in session files KEVCVSS 4.0MEDIUM 6.9
- TI-2023-22284 Craft CMS Remote Code Execution vulnerability CVSS 3.1CRITICAL 10.0
- TI-2024-25171 Craft CMS up to v3.7.31 was discovered to contain a SQL injection vulnerability via the GraphQL API endpoint. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-112773 · CVE Program
- CVE-2026-112773 · NVD
- FIRST EPSS
- GHSA-8vpq-j4mg-h24p · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences