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CVE-2026-111622

6.8 · MEDIUM

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 redirectU…

Published Oct 16, 2026CWE-601EPSS 0.43%

Overview

CVE-2026-111622 is a medium-severity vulnerability. It was published on October 16, 2026 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/a466350665/smart-ssoGitHubgithub.com/a466350665/smart-sso/blob/1.6.0/smart-sso-server/src/main/java/openjoe/smart/sso/server/controller/LoginController.java#L50-L59GitHubgithub.com/a466350665/smart-sso/blob/1.6.0/smart-sso-server/src/main/java/openjoe/smart/sso/server/controller/Oauth2Controller.java#L55-L84GitHubgithub.com/a466350665/smart-sso/blob/2.1.1/smart-sso-server/src/main/java/com/smart/sso/server/controller/LoginController.java#L53-L63Refhackmd.io/@hieuPenguinnn/smart-sso-oauth2-code-leak-open-redirectRefwww.vulncheck.com/advisories/smart-sso-through-2.1.1-oauth2-authorization-code-theft-via-unvalidated-redirecturiRefhackmd.io/@hieuPenguinnn/smart-sso-oauth2-code-leak-open-redirect

How CyberStrike helps

Frequently asked questions

What is CVE-2026-111622?

CVE-2026-111622 is a medium-severity vulnerability. It was published on October 16, 2026 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2026-111622?

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-111622?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-111622?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-111622 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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