Medium severity · published Mar 4, 2026
CVE-2026-2994
Concrete CMS below 9.4.8 is vulnerable to CSRF by a Rogue Admin using the Anti-Spam Allowlist Group
6.8
CVSS
0.2%
EPSS
No
On KEV
Description
Concrete CMS below version 9.4.8 is subject to CSRF by a Rogue Administrator using the Anti-Spam Allowlist Group Configuration via group_id parameter which can leads to a security bypass since changes are saved prior to checking the CSRF token. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.3 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks z3rco for reporting
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Concrete Cms · Concretecms
before 9.4.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2994
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2994
Patch
https://documentation.concretecms.org/9-x/developers/introduction/version-history/948-release-notes
Exploit
https://github.com/concretecms/concretecms/pull/12826
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