{"id":"CVE-2026-111622","summary":"smart-sso through 2.1.1 OAuth2 Authorization Code Theft via Unvalidated redirectUri","details":"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.","modified":"2026-10-21T02:55:50.034653373Z","published":"2026-10-16T17:38:58.736Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111622.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-601"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111622.json"},{"type":"PACKAGE","url":"https://github.com/a466350665/smart-sso"},{"type":"ARTICLE","url":"https://github.com/a466350665/smart-sso/blob/1.6.0/smart-sso-server/src/main/java/openjoe/smart/sso/server/controller/LoginController.java#L50-L59"},{"type":"ARTICLE","url":"https://github.com/a466350665/smart-sso/blob/1.6.0/smart-sso-server/src/main/java/openjoe/smart/sso/server/controller/Oauth2Controller.java#L55-L84"},{"type":"ARTICLE","url":"https://github.com/a466350665/smart-sso/blob/2.1.1/smart-sso-server/src/main/java/com/smart/sso/server/controller/LoginController.java#L53-L63"},{"type":"ADVISORY","url":"https://hackmd.io/@hieuPenguinnn/smart-sso-oauth2-code-leak-open-redirect"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111622"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/smart-sso-through-2.1.1-oauth2-authorization-code-theft-via-unvalidated-redirecturi"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/a466350665/smart-sso","events":[{"introduced":"0"},{"last_affected":"13c38f6159fb2354f63ab3d1c8e8d64692b51e74"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"0"},{"last_affected":"2.1.1"}]}]}}],"versions":["2.1.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111622.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}]}