Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-g9w5-qffc-6762

Nginx-UI Vulnerable to Unauthenticated Backup Download with Encryption Key Disclosure

CVSS 9.8 CriticalCriticalEPSS 0.23 · 97th percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.
  • CVSS score 9.8 (7.0 or more) and EPSS 0.23 (0.1 or more): a high score and a real chance of exploitation in the next 30 days.

How we decide what’s critical

Published by the GitHub Advisory Database at 5 Mar 2026, 18:26 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/0xJacky/Nginx-UIGo<2.3.32.3.3
Identifiers
GHSA-g9w5-qffc-6762 · CVE-2026-27944 · GO-2026-4614
Weakness (CWE)
CWE-306 · CWE-311
Tags
Published
5 Mar 2026
Updated
23 Mar 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Nginx-UI versions before 2.3.3 expose the /api/backup endpoint without authentication, and the response header X-Backup-Security discloses the keys needed to decrypt the backup. An unauthenticated remote attacker can download a full system backup, including user credentials, session tokens, SSL private keys and Nginx configurations, and decrypt it. Upgrade to version 2.3.3 or later. No workaround is listed.

Written 7 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.23, the 97th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:09 UTC First seen by agentprime
  2. 31 Oct 2026, 15:09 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.