FacturaScripts: Path traversal in UploadedFile::move() via getClientOriginalName() — arbitrary file write outside MyFiles/ leading to RCE

Exploitation

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

CVSS

9.9 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Summary `FacturaScripts\Core\UploadedFile::move($destiny, $destinyName)` concatenates `$destiny` and `$destinyName` without normalizing the resulting path. Every caller in the codebase passes `UploadedFile::getClientOriginalName()` — the unsanitized client-supplied filename — as `$destinyName`, so an authenticated user submitting a filename containing `../` segments can write the uploaded content to any directory writable by the web-server user, escaping the intended `MyFiles/` location. Because the shipped `htaccess-sample` (the documented production Apache configuration) excludes `Dinamic/Assets/` and `node_modules/` from the `index.php` rewrite, files written into those directories are served directly by Apache. Combined with `.htaccess` not being in `BLOCKED_EXTENSIONS`, the primitive escalates from arbitrary file write to remote code execution.

Vulnerable Code `Core/UploadedFile.php`: ```php private const BLOCKED_EXTENSIONS = 'phar', 'php', 'php3', 'php4', 'php5', 'php7',…

Published by the source

14 Jul 2026, 20:52 UTC

Last modified by the source

2 Nov 2026, 23:15 UTC

Source last checked

3 Nov 2026, 06:10 UTC

1. Revision 3 · amended · 3 Nov 2026

   Amended from osv record GHSA-hgjx-r89m-m7v4

2. Revision 2 · amended · 2 Nov 2026

   Amended from ghsa record GHSA-hgjx-r89m-m7v4

3. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-hgjx-r89m-m7v4

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# Patch Next advisory brief: CVE-2026-77526

Advisory: FacturaScripts: Path traversal in UploadedFile::move() via getClientOriginalName() — arbitrary file write outside MyFiles/ leading to RCE
IDs: CVE-2026-77526, GHSA-hgjx-r89m-m7v4
Record: https://patchnext.com/advisories/ghsa-hgjx-r89m-m7v4 (revision 3, source checked 3 Nov 2026, 06:10 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.9)
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 >= 2025, < 2026.3; 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-hgjx-r89m-m7v4 (GitHub-reviewed advisory GHSA-hgjx-r89m-m7v4 lists affected ranges: Packagist facturascripts/facturascripts >=2025 <=2026.2)
- Verified: https://osv.dev/vulnerability/GHSA-hgjx-r89m-m7v4 (OSV record GHSA-hgjx-r89m-m7v4 lists affected ranges: Packagist facturascripts/facturascripts >=2025 <2026.3 (fixed))

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