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TI-2026-71314 Aliases CVE-2026-84314GHSA-2gc7-j998-5xx6

Account takeover in Nginx UI via missing secure session check

Priority HIGH 73CWE-285Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-285.

Summary

Nginx UI before 2.4.1 by 0xJacky has an improper authorization flaw (CWE-285) in its user management endpoint, POST /api/users/:id. The endpoint lets an authenticated user change another user's password without the secure session step-up that the self-service password change requires. An attacker with an authenticated account can change the initial administrator's password, invalidate existing administrator tokens, and then log in as the administrator.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00419 36th percentileScored 2026-11-08
Fix Fixed nginx-ui (0xJacky): 2.4.1github.com/0xJacky/Nginx-UI (Go): 1.9.10-0.20260703131214-23d1934099b0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
0xJackynginx-uibefore 2.4.12.4.1Patch availableCNA
—github.com/0xJacky/Nginx-UI (Go)before 1.9.10-0.20260703131214-23d1934099b01.9.10-0.20260703131214-23d1934099b0Patch availableGHSA-2gc7-j998-5xx6
  • nginx-ui Vendor0xJacky Affected before 2.4.1 Fixed in 2.4.1 Patch available CNA
  • github.com/0xJacky/Nginx-UI (Go) Vendor— Affected before 1.9.10-0.20260703131214-23d1934099b0 Fixed in 1.9.10-0.20260703131214-23d1934099b0 Patch available GHSA-2gc7-j998-5xx6

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*——0xJacky
  • cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:* Versions — — ·0xJacky

Remediation

Upgrade Nginx UI to version 2.4.1 or later. The Go module github.com/0xJacky/Nginx-UI is fixed in version 1.9.10-0.20260703131214-23d1934099b0.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA nginx-ui (0xJacky) Fixed in 2.4.1
  • Fix · GHSA-2gc7-j998-5xx6 github.com/0xJacky/Nginx-UI (Go) Fixed in 1.9.10-0.20260703131214-23d1934099b0 Advisory →

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-84314
  2. 2026-10-13 Priority changed: MEDIUM → LOW
  3. 2026-10-13 CISA SSVC decision points changed
  4. 2026-10-13 Priority changed: LOW → HIGH
  5. 2026-10-16 Alias added: GHSA-2gc7-j998-5xx6
  6. 2026-10-16 Fix available: Go/github.com/0xJacky/[email protected] · GHSA-2gc7-j998-5xx6
  7. 2026-10-16 CVSS score added · GHSA-2gc7-j998-5xx6
  8. 2026-10-16 Weakness changed · GHSA-2gc7-j998-5xx6
  9. 2026-10-16 5 new references · GHSA-2gc7-j998-5xx6

References

Advisory 1

Other 4

  • TI-2026-25478 Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover CVSS 3.1CRITICAL 9.8
  • TI-2026-25472 nginx-ui Backup Restore Allows Tampering with Encrypted Backups CVSS 4.0CRITICAL 9.4
  • TI-2026-22288 Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure CVSS 3.1CRITICAL 9.8
  • TI-2024-15821 Nginx-UI arbitrary file write through the Import Certificate feature CVSS 3.1CRITICAL 9.8
  • TI-2026-70057 Code injection in Nginx UI backup restore allows code execution CVSS 4.0CRITICAL 9.4
  • TI-2026-32056 Nginx UI: Server-Side Request Forgery (SSRF) via Cluster Proxy Middleware Allows Access to Internal Services CVSS 3.1CRITICAL 9.9
See all 43 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences