CVE-2026-81895 Concrete CMS - SQL Injection

Concrete CMS before 9.5.3 contains a stored SQL injection caused by lack of integer validation and improper query concatenation in Document Library block's file-set identifiers, letting authenticated users with edit permissions execute arbitrary SQL, exploit requires authenticated user with block edit permissions.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.51% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
SQL Injection
Impact
SQL Injection
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-89

Vendor fix

Update to version 9.5.3 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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