Stored XSS in Concrete CMS Community Store Affects User Data
CVE-2026-93659

9.3CRITICAL

Key Information:

Vendor
CVE Published:
18 September 2026

What is CVE-2026-93659?

The Concrete CMS Community Store prior to version 2.7.8 is vulnerable to a stored XSS issue where customer-supplied data in order fields, such as billing name, email, and phone number, is not properly sanitized. This flaw enables unauthenticated attackers to inject malicious scripts that execute during authenticated manager sessions, potentially leading to unauthorized account creation or exfiltration of sensitive data. Users are advised to upgrade to the latest version to mitigate this risk.

Affected Version(s)

community_store 0 < 2.7.8

community_store 2.7.8

References

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Prince Edem Fiagbedzi
.