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Nginx UI: Self-upgrade runs an unsigned binary verified only by a same-origin digest →…

Priority HIGH 68CWE-494Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
High
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-494.

Summary

Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, the self-upgrade mechanism validates a downloaded binary only with a same-origin digest obtained from the same upgrade mirror. A compromised mirror or network attacker able to alter both responses can supply a malicious executable and matching digest. An operator-triggered upgrade is required, and the application installs and runs the attacker-controlled code in the Nginx UI process context on the next upgrade. This issue is fixed in version 2.5.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00175 6th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed nginx-ui (0xJacky): 2.5.0github.com/0xJacky/Nginx-UI (Go): 1.9.10-0.20260728114330-580585516dd8

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-ui2.0.0 to before 2.5.02.5.0Patch availableCNA
—github.com/0xJacky/Nginx-UI (Go)1.9.10-0.20250517140552-daee3ac7ade1 to before 1.9.10-0.20260728114330-580585516dd81.9.10-0.20260728114330-580585516dd8Patch availableGHSA-662p-52hx-cmh2
  • nginx-ui Vendor0xJacky Affected 2.0.0 to before 2.5.0 Fixed in 2.5.0 Patch available CNA
  • github.com/0xJacky/Nginx-UI (Go) Vendor— Affected 1.9.10-0.20250517140552-daee3ac7ade1 to before 1.9.10-0.20260728114330-580585516dd8 Fixed in 1.9.10-0.20260728114330-580585516dd8 Patch available GHSA-662p-52hx-cmh2

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*2.0.0 to before 2.5.0Vulnerable0xJacky
  • cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:* Versions 2.0.0 to before 2.5.0 Vulnerable ·0xJacky

Remediation

  • Fix · CNA nginx-ui (0xJacky) Fixed in 2.5.0
  • Fix · GHSA-662p-52hx-cmh2 github.com/0xJacky/Nginx-UI (Go) Fixed in 1.9.10-0.20260728114330-580585516dd8 Advisory →

Timeline

  1. 2026-10-09 Threatist record created from CVE-2026-107812
  2. 2026-10-09 Alias added: GHSA-662p-52hx-cmh2

References

  • 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 31 →

Sources