Nginx UI: Casdoor SSO callback uses a constant `state` parameter (login CSRF)

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GetCasdoorUri uses the configured Casdoor application name as a constant OAuth state value and CasdoorCallback does not compare the submitted state with a value bound to the initiating browser session. An unauthenticated attacker can cause a victim's browser to complete an attacker-controlled Casdoor authorization flow, and the callback can mint a Nginx UI session for the identity returned by that authorization code. This issue is fixed in version 2.4.1.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Packages ]Affected open-source packages

• Nginx-UI goAffected < 1.9.10-0.20260703131214-23d1934099b0 · GHSA-44xr-mrhh-qm78

[ References ]References

• github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2
• github.com/0xJacky/nginx-ui/releases/tag/v2.4.1
• github.com/0xJacky/nginx-ui/security/advisories/GHSA-44xr-mrhh-qm78