Vulnerability · Published Oct 12, 2026 · Assigned by GitHub_M

CVE-2026-84312Nginx UI: Casdoor SSO callback uses a constant `state` parameter (login CSRF)

High 7.1

In plain English

A high-severity improper authentication in nginx-ui from 0xJacky. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)0.2%top 93.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/0xJacky/Nginx-UI	1.9.10-0.20260703131214-23d1934099b0	GHSA-44xr-mrhh-qm78
Go	github.com/0xJacky/Nginx-UI	no fix listed	GO-2026-6773

Affected products (as reported)

Vendor	Product	Versions
0xJacky	nginx-ui	< 2.4.1

Weakness: CWE-287, CWE-352 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

References

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