Vulnerability · Published Oct 9, 2026 · Assigned by GitHub_M
CVE-2026-107809Nginx-UI AuthRequired token cookie fallback enables CSRF against management APIs
High 8.8
In plain English
A high-severity cross-site request forgery in nginx-ui from 0xJacky. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, AuthRequired accepts a browser-managed token cookie as an API credential after the front end stores the JWT in that cookie. Because management endpoints do not universally require a CSRF token or perform Origin or Referer validation, a remote attacker can induce a logged-in administrator's browser to submit authenticated cross-site state-changing requests, including POST /api/configs. The attack requires an administrator account without OTP/Passkey or a target endpoint that does not require secure-session proof. The attacker cannot read the cross-origin response but can modify Nginx configuration, trigger reloads, or invoke other management operations reachable with the victim's session. This issue is fixed in version 2.5.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/0xJacky/Nginx-UI | 1.9.10-0.20260728074433-a3999bd78a3b | GHSA-33rr-wq23-g6gg |
| Go | github.com/0xJacky/Nginx-UI | 1.9.10-0.20260728074433-a3999bd78a3b | GO-2026-6703 |
Affected products (as reported)
Weakness: CWE-352 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-33rr-wq23-g6gg x_refsource_CONFIRM
- https://github.com/0xJacky/nginx-ui/commit/a3999bd78a3b97ab22e6b5e9fd478ac57598a954 x_refsource_MISC
- https://github.com/0xJacky/nginx-ui/releases/tag/v2.5.0 x_refsource_MISC