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GHSA-9329-mxxw-qwf8
No affected components available
Summary
A CORS misconfiguration vulnerability exists in default installations of Strapi where attacker-controlled origins are improperly reflected in API responses.
Technical Details
By default, Strapi reflects the value of the Origin header back in the Access-Control-Allow-Origin response header without proper validation or whitelisting.
Example:
Origin: http://localhost:8888
Access-Control-Allow-Origin: http://localhost:8888
Access-Control-Allow-Credentials: true
This allows an attacker-controlled site (on a different port, like 8888) to send credentialed requests to the Strapi backend on 1337.
Suggested Fix
- Explicitly whitelist trusted origins
- Avoid reflecting dynamic origins
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. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
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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