Executive brief
Casdoor, an open-source identity and access management platform, contains a security flaw in its webhook handling component. An attacker with high-level administrative privileges can exploit this to force the server to make unauthorized requests to internal or external systems. This could lead to the exposure of internal network information or unauthorized access to private services.
Technical details
A Server-Side Request Forgery (SSRF) vulnerability exists in Casdoor version 2.356.0 within the Webhook URL Handler component. The flaw (CWE-918) allows a remote attacker with high privileges (PR:H) to submit manipulated URLs that the server will subsequently request. This can be used to scan internal networks, bypass firewalls, or interact with internal services that are not otherwise accessible from the internet. The vulnerability is exploitable over the network without user interaction. As of the advisory date, the vendor has not responded to disclosure attempts, and a formal patch has not been confirmed.
Affected products
- Casbin Casdoor 2.356.0
Timeline
- 2026-04-03: disclosed: Initial disclosure via VulDB and NVD.
- 2026-04-03: advisory: NVD publication date.