CVE-2026-111622 smart-sso through 2.1.1 OAuth2 Authorization Code Theft via Unvalidated redirectUri
Attackers can steal OAuth2 authorization codes via an unvalidated redirectUri in the login handler, leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-111622?
CVE-2026-111622 is a high-severity vulnerability in a466350665 smart-sso, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-601
Which versions are affected by CVE-2026-111622?
How do I fix CVE-2026-111622?
No fix has been published for CVE-2026-111622 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-111622 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111622 exists.
Sources
Also known as GHSA-7rfc-8j8f-xgwj.