FUXA has JWT Authentication Bypass via HTTP Referer header spoofing
FUXA 1.2.8 and prior contains an Authentication Bypass vulnerability leading to Remote Code Execution (RCE). The vulnerability exists in the server/api/jwt-helper.js middleware, which improperly trusts the HTTP "Referer" header to validate internal requests. A remote unauthenticated attacker can bypass JWT authentication by spoofing the Referer header to match the server's host. Successful exploitation allows the attacker to access the protected /api/runscript endpoint and execute arbitrary Node.js code on the server.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @frangoteam/fuxa | <= 1.2.8 | no fix |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-288- Platform
- npm
- Package
@frangoteam/fuxa- Disclosed
- 24.02.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-4r4r-4jp4-wwf9 - CC BY 4.0
Vulnerability history: @frangoteam/fuxa
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 6
- First → latest
- 03.2022 05.2026
- Without a fix
- 4
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 4
Disclosures per year
- 2022: 1
- 2023: 2
- 2024: 0
- 2025: 0
- 2026: 3
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FUXA has JWT Authentication Bypass via HTTP Referer header spoofing this entry
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