CVE-2026-27891
HighSummary
FacturaScripts is an accounting and invoicing software that contains a critical vulnerability in the Plugins::add() function. The issue lies in the improper validation of file paths within uploaded ZIP archives, allowing a Zip Slip attack leading to Arbitrary File Write and Remote Code Execution.
Risk Assessment
This vulnerability poses a serious risk to organizations as it allows attackers to overwrite sensitive .php files and execute malicious code on the server.
Recommendation
It is recommended to update to the latest version of FacturaScripts to mitigate this vulnerability and implement additional security mechanisms for validating uploaded files.
Original NVD description (English source)
FacturaScripts is an open source accounting and invoicing software. Versions 2026 and below contain a critical vulnerability in the Plugins::add() function. The system fails to properly validate the file paths within uploaded ZIP archives. This allows an attacker to perform a Zip Slip attack, leading to Arbitrary File Write and Remote Code Execution (RCE) by overwriting sensitive .php files outside the designated plugins directory. The vulnerability is located in Plugins.php. While the testZipFile function attempts to validate that the ZIP contains only one root folder, it does not sanitize or validate the individual file paths within that folder. An attacker can bypass this check by naming a file ValidPluginName/../../shell.php. The explode function will see ValidPluginName as the root folder, satisfying the count($folders) != 1 check. However, during extraction, the ../../ sequence triggers a path traversal, allowing the file to be written anywhere the web server has permissions the