Nginx UI: Account Takeover via Missing `RequireSecureSession` on User Management Endpoint

[ 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, the POST /api/users/:id user-management endpoint permits an authenticated user to change another user's password without passing RequireSecureSession, even though the self-service password-change path requires that step-up. An attacker with an authenticated account can change the initial administrator's password, invalidate existing administrator tokens, and then authenticate as the administrator. This issue is fixed in version 2.4.1.

[ Fixes ]Fixes and patches

• github.com/0xJacky/Nginx-UI 1.9.10-0.20260703131214-23d1934099b0Fixed version · GitHub Advisories · go package github.com/0xJacky/Nginx-UI: upgrade to 1.9.10-0.20260703131214-23d1934099b0 or later (affected < 1.9.10-0.20260703131214-23d1934099b0)

[ Packages ]Affected open-source packages

• github.com/0xJacky/Nginx-UI goAffected < 1.9.10-0.20260703131214-23d1934099b0 · fixed in 1.9.10-0.20260703131214-23d1934099b0 · GHSA-2gc7-j998-5xx6

[ 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-2gc7-j998-5xx6