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Public proof of conceptFix available

CVE-2026-107806

Nginx UI: Authenticated Remote Code Execution via Backup Restore App Config Overwrite

A public proof of concept exists; no exploitation attested.

  • Published2026-10-09
  • Fixed in2.5.0
  • WeaknessCWE-94

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Nginx UI is a web user interface for the Nginx web server. From 2.3.8 until 2.5.0, an authenticated administrator with an active secure session can submit attacker-controlled portable backup key material and a matching manifest to POST /api/restore. The restore flow trusts the supplied key, decrypts attacker-controlled contents, and replaces the live app.ini, including protected nginx command settings such as TestConfigCmd. Triggering POST /api/nginx/test then executes the restored command in the Nginx UI runtime context, affecting confidentiality, integrity, and availability. This issue is fixed in version 2.5.0.

Timeline

dates in UTC
  1. 2026-10-0915:17CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-107806?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-107806?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Nginxui nginx ui
BranchAffectedFixed in
2.x≥ 2.3.8, < 2.5.02.5.0
0xJacky/Nginx-UI
BranchAffectedFixed in
1.9≥ 1.9.10-0.20260421071512-7864e378f5cf, < 1.9.10-0.20260728074146-a467ed6525911.9.10-0.20260728074146-a467ed652591

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Nginxui nginx ui to 2.5.0

Advisories and patches

Detection

read 2026-10-23 19:24 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
1 repository, unverifiedmurrez/CVE-2026-107806
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionpoc2026-10-14
  • OpenCVESSVC decisionpoc—
  • CNACVSS 4.09.4read 2026-10-23
  • NVDCVSS 3.17.2read 2026-10-23
  • CNAweakness (CWE)CWE-94read 2026-10-23
  • FIRST EPSSEPSS score0.4 %2026-10-22
  • PoC-in-GitHubproof of concept1read 2026-10-23
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-10-09
Last Modified
2026-10-20
NVD status
Analyzed

Frequently asked questions

What is CVE-2026-107806?

Nginx UI is a web user interface for the Nginx web server. From 2.3.8 until 2.5.0, an authenticated administrator with an active secure session can submit attacker-controlled portable backup key material and a matching manifest to POST /api/restore. The restore flow trusts the supplied key, decrypts attacker-controlled contents, and replaces the live app.ini, including protected nginx command settings such as TestConfigCmd. Triggering POST /api/nginx/test then executes the restored command in the Nginx UI runtime context, affecting confidentiality, integrity, and availability. This issue is fixed in version 2.5.0.

Is CVE-2026-107806 actively exploited?

A proof-of-concept exploit exists for CVE-2026-107806, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-107806?

CVE-2026-107806 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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