CVE-2026-84312

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

State: Published
Severity: 7.1 High
Published: Oct 12, 2026
Updated: Oct 14, 2026
Reserved: Sep 1, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	7.1 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N	GitHub_M

Weaknesses

CWE-287 Improper Authentication
CWE-352 Cross-Site Request Forgery (CSRF)

Affected Products

Product	Versions
nginx-ui0xJacky	< 2.4.1Affected

References

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