FUXA has a hardcoded fallback JWT signing secret

published 2026-02-03 9 mo ago modified 2026-06-17 4 mo ago also GHSA-c8m8-3jcr-6rj5 , EUVD-2025-206717

cvss: 9.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.2%; EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits: 0; none known, plus a Nuclei check

FUXA v1.2.7 contains a hard-coded credential vulnerability in server/api/jwt-helper.js. The application uses a hard-coded secret key to sign and verify JWT Tokens. This allows remote attackers to forge valid admin tokens and bypass authentication to gain full administrative access.

Patch / fix

fixed in 1

npm @frangoteam/fuxa 1.3.0

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 9 mo ago (2026-02-05)

Exploit prediction

2.17% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Nuclei template FUXA <= 1.2.7 - Hardcoded JWT Secret Authentication Bypass nuclei detection template

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected packages

ecosystem	package	affected	fixed in
npm	@frangoteam/fuxa	<1.3.0	1.3.0

Classification

Weakness

CWE-798 Use of Hard-coded Credentials
CWE-321 Use of Hard-coded Cryptographic Key

References

github.com /frangoteam/FUXA/blob/master/server/api/jwt-helper.js
web, product
github.com /frangoteam/FUXA/security/advisories/GHSA-c8m8-3jcr-6rj5
web
nvd.nist.gov /vuln/detail/CVE-2025-69971
advisory
github.com /frangoteam/FUXA
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary