Remote Code Execution via unrestricted file extension in Craft CMS
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Craft CMS is an open source content management system. In affected versions of Craft CMS an unrestricted file extension may lead to Remote Code Execution. If the name parameter value is not empty string('') in the View.php's doesTemplateExist() -> resolveTemplate() -> _resolveTemplateInternal() -> _resolveTemplate() function, it returns directly without extension verification, so that arbitrary extension files are rendered as twig templates. When attacker with admin privileges on a DEV or an improperly configured STG or PROD environment, they can exploit this vulnerability to remote code execution. Code execution may grant the attacker access to the host operating system. This issue has been addressed in version 4.4.6. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Craft CMS | cms | 4.0.0 to before 4.4.6 | 4.4.6 | Patch available | CNA |
| — | craftcms/cms (Packagist) | 4.0.0 to before 4.4.6 | 4.4.6 | Patch available | GHSA-vqxf-r9ph-cc9c |
- cms VendorCraft CMS Affected 4.0.0 to before 4.4.6 Fixed in 4.4.6 Patch available CNA
- craftcms/cms (Packagist) Vendor— Affected 4.0.0 to before 4.4.6 Fixed in 4.4.6 Patch available GHSA-vqxf-r9ph-cc9c
Remediation
- Fix · CNA cms (craftcms) Fixed in 4.4.6
- Fix · GHSA-vqxf-r9ph-cc9c craftcms/cms (Packagist) Fixed in 4.4.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-32679
- 2026-10-03 Alias added: GHSA-vqxf-r9ph-cc9c
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-2023-32679 · CVE Program
- CVE-2023-32679 · NVD
- FIRST EPSS
- GHSA-vqxf-r9ph-cc9c · 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