CubeCart Unauthorized Newsletter Unsubscription via force_unsubscribe Parameter
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
CubeCart is an ecommerce software solution. Prior to version 6.5.11, a logic flaw exists in the newsletter subscription endpoint that allows an attacker to unsubscribe any user without their consent. By changing the value of the force_unsubscribe parameter in the POST request to 1, an attacker can force the removal of any valid subscriber’s email address. This issue has been patched in version 6.5.11.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
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 6.5.11
Timeline
- 2026-10-02 Threatist record created from CVE-2025-59413
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-2024-22066 File Upload vulnerability in CubeCart before 6.5.5 allows an authenticated user to… CVSS 3.1HIGH 8.0
- TI-2025-36897 CubeCart Session Not Invalidated After Password Change CVSS 3.1HIGH 7.1
- TI-2025-36965 CubeCart Vulnerable to HTML Injection in Product Reviews Allows Malicious Links and Defacement CVSS 3.1MEDIUM 5.4
- TI-2025-36964 CubeCart Stored/Reflected HTML Injection Vulnerability in Contact Enquiry CVSS 3.1MEDIUM 5.4
- TI-2013-01273 The Cubecart::_basket method in classes/cubecart.class.php in CubeCart 5.0.0 through… CVSS 3.1CRITICAL 9.8
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences