CVE-2025-0663 Auth bypass in WSO2 Identity Server
Privileged users can forge authentication cookies to take over accounts in other tenants due to shared cryptographic keys in WSO2 Identity Server.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-0663?
CVE-2025-0663 is a medium-severity authentication bypass vulnerability in Wso2 Identity Server, published on 23 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A cross-tenant authentication vulnerability exists in multiple WSO2 products due to improper cryptographic design in Adaptive Authentication. A single cryptographic key is used across all tenants to sign authentication cookies, allowing a privileged user in one tenant to forge authentication cookies for users in other tenants.
Because the Auto-Login feature is enabled by default, this flaw may allow an attacker to gain unauthorized access and potentially take over accounts in other tenants. Successful exploitation requires access to Adaptive Authentication functionality, which is typically restricted to high-privileged users. The vulnerability is only exploitable when Auto-Login is enabled, reducing its practical impact in deployments where the feature is disabled.
Weakness: CWE-287
Which versions are affected by CVE-2025-0663?
It affects 3 products.
Products include Wso2 Identity Server, Wso2 Identity Server as Key Manager, Wso2 Open Banking Iam.
How do I fix CVE-2025-0663?
No fix has been published for CVE-2025-0663 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-0663 being exploited?
There is no known exploitation of CVE-2025-0663 in the wild and no public exploit code.
Other vulnerabilities in Wso2 Identity Server
- CVE-2016-4311 Cross-site request forgery in n/a
- CVE-2025-10470 Denial-of-Service via Magic Link Authentication in WSO2 Identity Server Allows Service Unavailability
- CVE-2025-12107 Server-Side Template Injection via Velocity Template Engine in Multiple WSO2 Products Allows Remote Code Execution
- CVE-2016-4312 XML external entity in n/a
- CVE-2025-10908 Account Lock Bypass via Magic Link or Pass Key Authentication in WSO2 Identity Server Allows Unauthorized Access
Sources
Also known as GHSA-9c82-vpf4-hvh3.