EUVD-2026-33329
GHSA-gqvc-rhwj-m45g
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Primary rating from Vendor (mitre) · only source for this CVE.
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
Falco Solutions PHPPageBuilder v0.31.0 contains an unrestricted file upload vulnerability in the pagemanager/pagebuilder module that allows remote attackers to upload arbitrary files and achieve remote code execution. The vulnerability exists due to insufficient validation of uploaded file types and executable content.
AnalysisAI
Remote code execution in Falco Solutions PHPageBuilder v0.31.0 is possible through an unrestricted file upload flaw in the pagemanager/pagebuilder module, enabling unauthenticated remote attackers to upload arbitrary executable files (typically PHP webshells) and run code on the underlying web server. Publicly available exploit code exists in a dedicated GitHub repository, though EPSS scoring (0.06%, 18th percentile) and SSVC indicate no observed in-the-wild exploitation despite the attack being fully automatable.
Technical ContextAI
PHPageBuilder is an open-source PHP-based drag-and-drop website builder maintained on GitHub (HansSchouten/PHPageBuilder) and distributed by Falco Solutions. The vulnerable component is the pagemanager/pagebuilder module, which accepts file uploads from administrative or page-editing workflows. The root cause is CWE-434 (Unrestricted Upload of File with Dangerous Type) - the upload handler fails to validate file extension, MIME type, magic bytes, or content for executable script payloads, allowing files such as .php, .phtml, or polyglot files to be written into a web-accessible directory and subsequently executed by the PHP interpreter when requested.
RemediationAI
No vendor-released patch identified at time of analysis - neither the CVE references nor the EUVD entry cite a fixed version or commit, so administrators should monitor https://github.com/HansSchouten/PHPageBuilder for an upstream release superseding 0.31.0. As compensating controls, restrict access to the pagemanager/pagebuilder module to trusted administrators via web-server-level authentication (HTTP basic auth, IP allowlisting, or VPN-only access), which removes unauthenticated reachability at the cost of slightly more friction for legitimate editors. Configure the web server to disallow PHP execution in any upload/storage directory (for example, an Apache 'php_flag engine off' or nginx 'location' block stripping the PHP handler) to neutralize uploaded webshells even if the validation flaw is triggered. Additionally deploy a WAF rule blocking multipart uploads to the pagemanager/pagebuilder endpoint where file extensions match php/phtml/phar/htaccess, and audit existing upload directories for unexpected scripts. Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-39292.
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