Medium severity6.8NVD Advisory· Published Oct 16, 2026· Updated Oct 16, 2026
CVE-2026-111622
CVE-2026-111622
Description
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.
Affected products
1Patches
Vulnerability mechanics
References
5- github.com/a466350665/smart-sso/blob/1.6.0/smart-sso-server/src/main/java/openjoe/smart/sso/server/controller/LoginController.javanvd
- github.com/a466350665/smart-sso/blob/1.6.0/smart-sso-server/src/main/java/openjoe/smart/sso/server/controller/Oauth2Controller.javanvd
- github.com/a466350665/smart-sso/blob/2.1.1/smart-sso-server/src/main/java/com/smart/sso/server/controller/LoginController.javanvd
- hackmd.io/@hieuPenguinnn/smart-sso-oauth2-code-leak-open-redirectnvd
- www.vulncheck.com/advisories/smart-sso-through-2.1.1-oauth2-authorization-code-theft-via-unvalidated-redirecturinvd
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