{"cve":"CVE-2026-84360","nvd":{"published":"2026-10-12T21:17:22.960","modified":"2026-10-13T14:31:20.750","status":"Deferred","description":"Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, the HTTP configuration mutation routes require RequireSecureSession, but /mcp and /mcp_message require only ordinary authentication before exposing nginx_config_add and nginx_config_modify. An OTP-enabled user with a normal JWT but no valid X-Secure-Session-ID can therefore create or modify Nginx configuration and trigger reload behavior through MCP, bypassing the intended step-up control. This issue is fixed in version 2.4.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","score":8.1},"cwes":["CWE-288"],"references":["https://github.com/0xJacky/nginx-ui/commit/23d1934099b05b2a01589b48129dc3d3159d91c2","https://github.com/0xJacky/nginx-ui/releases/tag/v2.4.1","https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-vc32-4gwf-77xp","https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-vc32-4gwf-77xp"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:58:52.678897993+00:00"},"epss":{"cve":"CVE-2026-84360","score":0.0042,"percentile":0.36036,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-vc32-4gwf-77xp","url":"https://osv.dev/vulnerability/GHSA-vc32-4gwf-77xp","summary":"Nginx UI: OTP secure-session step-up can be bypassed via MCP configuration tools","modified":"2026-10-19T21:41:02.724775704Z","packages":[{"ecosystem":"Go","name":"github.com/0xJacky/Nginx-UI","purl":"pkg:golang/github.com/0xJacky/Nginx-UI","ranges":["<1.9.10-0.20260703131214-23d1934099b0"],"fixed":["1.9.10-0.20260703131214-23d1934099b0"]}]},{"id":"GO-2026-6799","url":"https://osv.dev/vulnerability/GO-2026-6799","summary":"Nginx UI: OTP secure-session step-up can be bypassed via MCP configuration tools in github.com/0xJacky/Nginx-UI","modified":"2026-10-19T21:31:53.417011797Z","packages":[{"ecosystem":"Go","name":"github.com/0xJacky/Nginx-UI","purl":"pkg:golang/github.com/0xJacky/Nginx-UI","ranges":["<1.9.10-0.20260703131214-23d1934099b0"],"fixed":["1.9.10-0.20260703131214-23d1934099b0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}