Invoct – PDF Invoices & Billing for WooCommerce Security & Risk Analysis

The plugin "kirilkirkov-pdf-invoice-manager" v1.8 exhibits a generally strong security posture, with excellent practices in output escaping (99%) and a high percentage of SQL queries using prepared statements (90%). The absence of unprotected AJAX handlers and REST API routes is a significant strength, as is the presence of nonce and capability checks. The plugin also has a history of only one medium severity vulnerability, which is currently patched, indicating a positive trend in addressing security issues.

However, the taint analysis reveals some areas for concern. Specifically, there are 3 high-severity taint flows identified, indicating potential pathways for attackers to exploit unsanitized data. While the number of flows with unsanitized paths (6) is not exceptionally high, the presence of high-severity flows warrants attention. Additionally, the static analysis flags 6 flows with unsanitized paths, and while no critical severity flows were found, these still represent potential weaknesses that could be exploited if combined with other factors or specific attack vectors.

In conclusion, the plugin demonstrates good core security practices. The low number of unprotected entry points and the focus on prepared statements and output escaping are commendable. The vulnerability history is also a positive indicator. The primary area of concern lies within the taint analysis, where high-severity flows and unsanitized paths exist. Addressing these specific taint flows should be a priority to further harden the plugin's security.