All vulnerabilities
CVE-2026-107805GHSA-j3hg-9rp3-5hw9GO-2026-6734

github.com/0xJacky/Nginx-UI: Nginx UI: Unauthenticated signed-request body staging can exhaust temporary storage

0xJacky github.com/0xJacky/Nginx-UIgoWeb servers
Open in ThreatlineRecord JSON
CVSS
7.5High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.47%Chance of exploitation activity in the next 30 days, higher than 39% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1.9.10-0.20260901043436-8c9b9a1aff21Fixed versionGitHub
Published9 Oct 2026Updated 19 Oct 2026CVE List

What fixes it

  • 1.9.10-0.20260901043436-8c9b9a1aff21github.com/0xJacky/Nginx-UI, goGitHubgo get github.com/0xJacky/Nginx-UI@v1.9.10-0.20260901043436-8c9b9a1aff21
  • 1.9.10-0.20260901043436-8c9b9a1aff21github.com/0xJacky/Nginx-UI, GoOSVgo get github.com/0xJacky/Nginx-UI@v1.9.10-0.20260901043436-8c9b9a1aff21

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Summary

In Nginx UI versions 2.5.0 through 2.5.x, the node-signature authentication path staged an attacker-controlled request body in a temporary file and synchronized it to disk before validating the body digest and cryptographic signature. An unauthenticated remote client that can reach the API can provide syntactically valid signature metadata and cause storage and I/O consumption before the request is rejected.

Impact

Concurrent malicious requests can consume temporary filesystem capacity, disk I/O, and request-processing resources, potentially disrupting Nginx UI and other services that share the filesystem. The issue affects availability only; it does not bypass authentication and does not provide confidentiality or integrity impact. Deployment-specific reverse-proxy body limits, filesystem quotas, and concurrency limits may reduce practical impact.

Remediation

Upgrade to Nginx UI 2.6.0 or later. The fix authenticates signed request metadata before staging the body and enforces an application-level streaming size limit with cleanup for rejected requests.

Fix commit: https://github.com/0xJacky/nginx-ui/commit/8c9b9a1aff218ee6c980d047b750e49da3c46796

Text from GitHub Advisory Database

Affected versions 3

  • github.com/0xJacky/Nginx-UI, go>= 1.9.10-0.20260729084040-acb59fdd81db, < 1.9.10-0.20260901043436-8c9b9a1aff21GitHub
  • nginx-uiaffected: >= 2.5.0, < 2.6.0CVE List
  • github.com/0xJacky/Nginx-UI, Gofrom 1.9.10-0.20260729084040-acb59fdd81db, fixed in 1.9.10-0.20260901043436-8c9b9a1aff21OSV

References 5