FacturaScripts: Account takeover of any 2FA-enabled user

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N · score source

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Authentication bypass in FacturaScripts: /login?action=two-factor-validation accepts brute-forceable TOTP without password or CSRF protection Summary Core/Controller/Login.php::twoFactorValidationAction() accepts an unauthenticated POST containing only fsNick and fsTwoFactorCode. If the TOTP value matches, the server issues a full fsNick + fsLogkey session cookie pair. The handler: 1. Does not verify the password — the user is not required to have just completed loginAction. 2. Does not call validateFormToken() — no CSRF token is required (every other action handler in the same file does call it). 3. Does not call userHasManyIncidents() before processing — loginAction and changePasswordAction both check this guard before doing work; the 2FA handler only writes to the incident list after a failure, and the incident list is consulted by loginAction / changePasswordAction but not by the 2FA handler itself. The endpoint therefore has no rate-limiting at all. Combined with…

Published by the source

13 Jul 2026, 23:35 UTC

Last modified by the source

13 Jul 2026, 23:35 UTC

Source last checked

26 Oct 2026, 14:50 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-c67f-gmxw-mj93

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# Patch Next advisory brief: CVE-2026-47677

Advisory: FacturaScripts: Account takeover of any 2FA-enabled user
IDs: CVE-2026-47677, GHSA-c67f-gmxw-mj93
Record: https://patchnext.com/advisories/cve-2026-47677 (revision 1, source checked 26 Oct 2026, 14:50 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: facturascripts/facturascripts 2026.3. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist facturascripts/facturascripts: affected <= 2026.2; fixed in 2026.3

## Suggested inspection (read-only)
- Packagist facturascripts/facturascripts: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on facturascripts/facturascripts.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-c67f-gmxw-mj93 (GitHub-reviewed advisory GHSA-c67f-gmxw-mj93 lists affected ranges: Packagist facturascripts/facturascripts >=0 <=2026.2)

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