{"id":"CVE-2026-111622","title":"smart-sso through 2.1.1 OAuth2 Authorization Code Theft via Unvalidated redirectUri","summary":"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…","severity":"medium","cvss":6.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-601"],"vendor":"a466350665","product":"smart-sso","affected":["smart-sso <= 2.1.1"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T19:29:03.823422Z"},"exploitAvailable":true,"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:29:48.555Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111622","references":[{"url":"https://hackmd.io/@hieuPenguinnn/smart-sso-oauth2-code-leak-open-redirect"},{"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"},{"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"},{"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"},{"url":"https://github.com/a466350665/smart-sso"},{"url":"https://www.vulncheck.com/advisories/smart-sso-through-2.1.1-oauth2-authorization-code-theft-via-unvalidated-redirecturi","label":"VulnCheck Advisory: smart-sso through 2.1.1 OAuth2 Authorization Code Theft via Unvalidated redirectUri"}],"tags":["cve.org","exploit-available"],"ingestedAt":"2026-10-16T18:43:08.691Z","slug":"CVE-2026-111622","body":"## Overview\n\nsmart-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.\n\n## Affected\n\n- `smart-sso <= 2.1.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":37.4,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":223231,"id":"CVE-2026-111622","ts":1792180021589,"field":"exploit_available","old":"false","new":"true"}]}