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CVE-2026-121543

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

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.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
A466350665
Products
Smart-sso
CVE-2026-111622

smart-sso through 2.1.1 OAuth2 Authorization Code Theft via Unvalidated redirectUri

smart-sso through 2.1.1 contains an open redirect vulnerability in the /login handler that allows unauthenticated attackers to steal OAuth2 authorization codes by supplying an unvalidated redirectUri parameter. Attackers can send crafted /login links to users with active SSO sessions, then redeem stolen codes at /oauth2/access_token with any valid client credentials to obtain victims' access tokens.

CVSS 4.0 · 7.6 High EPSS < 1% KEV · Not listed
Vendors
A466350665
Products
Smart-sso
CVE-2026-2971

a466350665 Smart-SSO Login login.html cross site scripting

A vulnerability was found in a466350665 Smart-SSO up to 2.1.1. Affected by this issue is some unknown functionality of the file smart-sso-server/src/main/resources/templates/login.html of the component Login. Performing a manipulation of the argument redirectUri results in cross site scripting. The attack is possible to be carried out remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
A466350665
Products
Smart-sso
CVE-2026-2972

a466350665 Smart-SSO Role Edit UserController.java save cross site scripting

A vulnerability was determined in a466350665 Smart-SSO up to 2.1.1. This affects the function Save of the file smart-sso-server/src/main/java/openjoe/smart/sso/server/controller/admin/UserController.java of the component Role Edit Page. Executing a manipulation can lead to cross site scripting. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed
Vendors
A466350665
Products
Smart-sso