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GHSA-36rg-gfq2-3h56
No affected components available
Summary
An open redirect has been found in the originCheck middleware function, which affects the following routes: /verify-email, /reset-password/:token, /delete-user/callback, /magic-link/verify, /oauth-proxy-callback.
Details
In the matchesPattern function, url.startsWith( can be deceived with a url that starts with one of the trustedOrigins.
const matchesPattern = (url: string, pattern: string): boolean => {
if (url.startsWith("/")) {
return false;
}
if (pattern.includes("*")) {
return wildcardMatch(pattern)(getHost(url));
}
return url.startsWith(pattern);
};
Open Redirect PoCs
export const auth = betterAuth({
baseURL: 'http://localhost:3000',
trustedOrigins: [
"http://trusted.com"
],
emailAndPassword: {
...
},
})
/reset-password/:token
<img width="481" alt="image" src="https://github.com/user-attachments/assets/46e7871a-1dad-4375-af94-0446e29aaab6" />
<br/>
<img width="518" alt="image 1" src="https://github.com/user-attachments/assets/83abfb53-6fc9-4d1f-918d-9b4ce093c808" />
/verify-email
<img width="549" alt="image" src="https://github.com/user-attachments/assets/7dd424b7-42a4-4616-aa73-fcc2e3eeb309" />
<br/>
<img width="436" alt="image" src="https://github.com/user-attachments/assets/54f11636-0a3e-4e83-9a09-57c5e8ba98cd" />
/delete-user/callback
<img width="545" alt="image" src="https://github.com/user-attachments/assets/2ff1b217-d069-48fb-81c1-f8c8792d34a4" />
<br/>
<img width="492" alt="image" src="https://github.com/user-attachments/assets/71df11db-9d38-4f34-abe1-add9d60b3486" />
/magic-link/verify
<img width="379" alt="image" src="https://github.com/user-attachments/assets/6b6b6a8a-59b6-4a65-9df3-57d5b2f6eb0f" />
<br/>
<img width="413" alt="image" src="https://github.com/user-attachments/assets/82a5c9c6-2ea0-44eb-af48-40732657b59e" />
/oauth-proxy-callback
<img width="548" alt="image" src="https://github.com/user-attachments/assets/d8d2ee51-e9fd-4337-bec3-a70afd1ceacb" />
<br/>
<img width="544" alt="image" src="https://github.com/user-attachments/assets/f097d406-b965-4f85-b124-9b0ef1cc2689" />
Impact
Untrusted open redirects in various routes.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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