CubeCart: Server-Side Template Injection (SSTI) in Smarty Templates leading to RCE
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-1336.
Summary
CubeCart is an ecommerce software solution. Prior to 6.7.0, an Authenticated Server-Side Template Injection (SSTI) vulnerability exists in multiple modules of CubeCart (including Email Templates and Documents). The application unsafely evaluates user-supplied input directly through the Smarty template engine. By leveraging this, an authenticated attacker with administrative privileges can bypass current restrictions and call native PHP functions within the templates, such as readgzfile() to read sensitive configuration files, or error_log() to write a malicious PHP web shell, ultimately achieving Information Disclosure and full Remote Code Execution (RCE). This vulnerability is fixed in 6.7.0.
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
Remediation
- Fix · CNA v6 (cubecart) Fixed in 6.7.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-44377
References
More cubecart vulnerabilities
- TI-2024-23117 Directory Traversal vulnerability in CubeCart v.6.5.5 and before allows an attacker to… CVSS 3.1CRITICAL 9.8
- TI-2026-33453 CubeCart: Server-Side Template Injection (SSTI) in Smarty Templates leading to RCE CVSS 3.1CRITICAL 9.1
- TI-2026-32902 CubeCart: Authenticated Arbitrary File Upload to RCE in REST Files API CVSS 3.1CRITICAL 9.1
- TI-2026-32904 CubeCart: Pre-Authenticated Password Reset Link Poisoning via HTTP Host Header CVSS 3.1HIGH 8.1
- TI-2024-22066 File Upload vulnerability in CubeCart before 6.5.5 allows an authenticated user to… CVSS 3.1HIGH 8.0
- TI-2025-36966 CubeCart Unauthorized Newsletter Unsubscription via force_unsubscribe Parameter CVSS 3.1MEDIUM 6.5
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences