smart-sso through 2.0.1 Incorrect Authorization in PermissionFilter Enables Admin Escalation

Advisories

smart-sso through 2.0.1 Incorrect Authorization in PermissionFilter Enables Admin Escalation

Severity: high
Date: 11/3/2026
Affecting: smart-sso <= 2.0.1
CVE: CVE-2026-121543
CWE: CWE-863 Incorrect Authorization
CVSS: 8.7
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: GitHub Issue #79
https://github.com/a466350665/smart-sso
Fix commit
https://github.com/a466350665/smart-sso/blob/91d2dfef8973d308fa1b762e4c86dfbcbe9793ff/smart-sso-starter/smart-sso-starter-client/src/main/java/openjoe/smart/sso/client/filter/PermissionFilter.java#L38-L47
https://github.com/a466350665/smart-sso/blob/91d2dfef8973d308fa1b762e4c86dfbcbe9793ff/smart-sso-server/src/main/java/openjoe/smart/sso/server/controller/admin/UserRoleController.java
https://github.com/a466350665/smart-sso/commit/a74a791bea7fc7b06ce95f52ce5805d8d7886d48
Credit: George Chen
Description: smart-sso through 2.0.1 contains an incorrect authorization vulnerability in PermissionFilter that allows any authenticated user to call admin console APIs because unlisted paths are permitted by default. Attackers can call /admin/user-role/save to assign themselves the administrator role, reset passwords, and manage users, roles, and applications across integrated systems.

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