Vulnerability · Published Oct 12, 2026 · Assigned by GitHub_M

CVE-2026-84315Nginx UI OTP secure-session step-up is missing on sensitive mutation routes

High 8.3

In plain English

A high-severity missing authorization 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 0.3% (higher than 27% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.3High

Exploit odds (30 days)0.3%top 72.8% 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, Nginx UI does not apply RequireSecureSession to multiple authenticated mutation routes even though OTP-enabled users are expected to present a fresh X-Secure-Session-ID for sensitive actions. A stolen authenticated session can therefore create or alter automatic backups, DNS credentials and records, certificates and ACME users, Nginx control settings, and site or stream automation without completing the OTP or passkey step-up. 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-5v7c-xpfp-p65m
Go	github.com/0xJacky/Nginx-UI	1.9.10-0.20260703131214-23d1934099b0	GO-2026-6775

Affected products (as reported)

Vendor	Product	Versions
0xJacky	nginx-ui	< 2.4.1

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

References

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-5v7c-xpfp-p65m 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