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.
References6
- github.com/Thecosy/IceCMS
- github.com/Thecosy/IceCMS/blob/afd7a9f0d04a714e7c7e735e566c27f5…
- github.com/Thecosy/IceCMS/blob/afd7a9f0d04a714e7c7e735e566c27f5…
- hackmd.io/@hieuPenguinnn/icecms-backend-user-admin-unauth-accou…
- www.vulncheck.com/advisories/icecms-through-4.1.5-missing-authe…
- hackmd.io/@hieuPenguinnn/icecms-backend-user-admin-unauth-accou…
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
9.3
CRITICAL
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 1% percentile: 46 · as of 10 November 2026
- CWE
- CWE-306
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.