CVE-2026-93659 Concrete CMS Community Store - Stored XSS

Concrete CMS Community Store < 2.7.8 contains a stored XSS caused by lack of HTML escaping in customer-supplied order fields, letting unauthenticated attackers execute scripts in authenticated manager sessions, exploit requires no authentication.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Not required
EPSS
0.37% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Published
18 September 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to version 2.7.8 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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