Critical severity · published Oct 16, 2026
CVE-2026-111673
IceCMS through 4.1.5 Missing Authentication via /User Administrative Endpoints
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
IceCMS through 4.1.5 contains a missing authentication vulnerability that allows unauthenticated attackers to modify, delete, or disable any account because /User/** is excluded from the Shiro jwt filter. Attackers can send PUT requests to /User/updateUser to set a new password and role on any userId, including administrators, enabling full account takeover.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IC
IceCMS · Thecosy
through 4.1.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111673
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111673
github.com
https://github.com/Thecosy/IceCMS
github.com
https://github.com/Thecosy/IceCMS/blob/afd7a9f0d04a714e7c7e735e566c27f54b5d5201/IceCMS-ment/src/main/java/com/ttice/icewkment/configuration/ShiroConfig.java#L64-L88
github.com
https://github.com/Thecosy/IceCMS/blob/afd7a9f0d04a714e7c7e735e566c27f54b5d5201/IceCMS-ment/src/main/java/com/ttice/icewkment/controller/backend/UserController.java#L743-L818
hackmd.io
https://hackmd.io/@hieuPenguinnn/icecms-backend-user-admin-unauth-account-takeover
www.vulncheck.com
https://www.vulncheck.com/advisories/icecms-through-4.1.5-missing-authentication-via-user-administrative-endpoints
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