CVE-2026-81907 Concrete CMS - Cross-Site Request Forgery

Concrete CMS <= 9.5.2 contains a cross-site request forgery caused by lack of enforcement of CSRF token validation in the Express "Clear Entries" function, letting remote attackers force authenticated administrators to delete entries, exploit requires victim admin to visit attacker-controlled page.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.14% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Cross-Site Request Forgery
Impact
Data Tampering, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
Published
11 September 2026
Updated
15 October 2026
Weakness
CWE-352

Vendor fix

Update to a version later than 9.5.2 or the latest available version.

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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