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TI-2026-25474 Aliases CVE-2026-33028GHSA-m468-xcm6-fxg4

Nginx UI: Race Condition Leads to Persistent Data Corruption and Service Collapse

Priority MEDIUM 64CWE-362Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub.

Summary

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui application is vulnerable to a Race Condition. Due to the complete absence of synchronization mechanisms (Mutex) and non-atomic file writes, concurrent requests lead to the severe corruption of the primary configuration file (app.ini). This vulnerability results in a persistent Denial of Service (DoS) and introduces a non-deterministic path for Remote Code Execution (RCE) through configuration cross-contamination. This issue has been patched in version 2.3.4.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00554 46th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed nginx-ui (0xJacky): 2.3.4github.com/uozi-tech/cosy (Go): 1.30.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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 2.3.42.3.4Patch availableCNA
—github.com/0xJacky/Nginx-UI (Go)up to 1.99—No fix listedGHSA-m468-xcm6-fxg4
—github.com/uozi-tech/cosy (Go)before 1.30.11.30.1Patch availableGHSA-m468-xcm6-fxg4
  • nginx-ui Vendor0xJacky Affected before 2.3.4 Fixed in 2.3.4 Patch available CNA
  • github.com/0xJacky/Nginx-UI (Go) Vendor— Affected up to 1.99 Fixed in — No fix listed GHSA-m468-xcm6-fxg4
  • github.com/uozi-tech/cosy (Go) Vendor— Affected before 1.30.1 Fixed in 1.30.1 Patch available GHSA-m468-xcm6-fxg4

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:*before 2.3.4Vulnerable0xJacky
cpe:2.3:a:uozi:cosy:*:*:*:*:*:go:*:*before 1.30.1VulnerableUozi
  • cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:* Versions before 2.3.4 Vulnerable ·0xJacky
  • cpe:2.3:a:uozi:cosy:*:*:*:*:*:go:*:* Versions before 1.30.1 Vulnerable ·Uozi

Remediation

  • Fix · CNA nginx-ui (0xJacky) Fixed in 2.3.4
  • Fix · GHSA-m468-xcm6-fxg4 github.com/uozi-tech/cosy (Go) Fixed in 1.30.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33028
  2. 2026-10-03 Alias added: GHSA-m468-xcm6-fxg4

References

Exploit 1

Advisory 1

Other 2

  • 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

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