GHSA-r9g5-7q8j-958c

Suggest an improvement
Source
https://github.com/advisories/GHSA-r9g5-7q8j-958c
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-r9g5-7q8j-958c/GHSA-r9g5-7q8j-958c.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-r9g5-7q8j-958c
Aliases
Published
2026-05-28T20:33:11Z
Modified
2026-05-28T20:56:25Z
Severity
  • 5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
FUXA provides guest and invalid-token access to protected read APIs in secure mode
Details

Summary

When secureEnabled=true, FUXA 1.3.0-2773 still allows guest and invalid-token requests to read project, alarms, and scheduler APIs.

Details

In secure mode, requests with no token or an explicitly invalid token were still able to access protected read endpoints.

Confirmed behavior:

  • guest GET /api/project returned 200 OK
  • invalid-token requests to /api/project also returned successful responses containing project data
  • guest and invalid-token requests also returned 200 OK on:
    • /api/alarms
    • /api/scheduler

Relevant code paths identified during analysis:

  • server/api/jwt-helper.js
    • verifyToken() converts missing-token or invalid-token states into guest context instead of rejecting the request
  • server/api/projects/index.js
  • server/api/alarms/index.js
  • server/api/scheduler/index.js

These handlers accepted the guest context and returned sensitive data in secure mode.

PoC

Tested only against isolated local lab instances under the original tester's control. No production, customer, shared, or third-party systems were involved.

Reproduction:

  1. Start FUXA 1.3.0-2773.
  2. Set secureEnabled=true.
  3. Send unauthenticated requests to:
    • GET /api/project
    • GET /api/alarms
    • GET /api/scheduler?id=test
  4. Observe 200 OK responses.
  5. Send the same requests with an explicitly invalid x-access-token value.
  6. Observe the same successful responses.

The exact HTTP requests and local PoC script used for confirmation can be provided upon request.

Impact

This is an authentication/authorization weakness in secure mode.

Impact includes:

  • project metadata disclosure
  • alarms disclosure
  • scheduler information disclosure
  • assistance in reconnaissance/follow-on attacks

Operators who believe secure mode protects these APIs are impacted.

Database specific 
{
    "cwe_ids":  [
        "CWE-287",
        "CWE-862"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-05-28T20:33:11Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}
References

Affected packages

npm / fuxa-server

Package

Name
fuxa-server
View open source insights on deps.dev
Purl
pkg:npm/fuxa-server

Affected ranges

Type
SEMVER
Events
Introduced
1.3.0-2773
Fixed
1.3.1

Affected versions

1.*
1.3.0-2773

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-r9g5-7q8j-958c/GHSA-r9g5-7q8j-958c.json"