medium6.3
CVE-2026-42879
FacturaScripts Vulnerable to Authenticated Remote Code Execution (RCE) via GIF Image Upload in Product Images
Impact
FacturaScripts is an open source accounting and invoicing software. In 2025.81 and earlier, an authenticated unrestricted file upload vulnerability exists in FacturaScripts' product image upload functionality. An attacker with valid credentials can upload a PHP file disguised as a GIF image (using a GIF89a header), bypassing MIME type validation. The file is stored with its original extension, including executable extensions such as .php. The vulnerability exists the addImageAction() method of Core/Lib/ExtendedController/ProductImagesTrait.php.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | facturascripts/facturascripts | <= 2025.81 | none recorded |