Easy Invoice – Invoice Generator, PDF Quotes & Payments Security & Risk Analysis

The "easy-invoice" v2.1.12 plugin presents a mixed security posture. On the positive side, it demonstrates strong practices in SQL query handling, with 100% utilizing prepared statements, and a high percentage (80%) of output being properly escaped, indicating an awareness of common web vulnerabilities. The plugin also has a substantial number of nonce and capability checks, suggesting an effort to protect sensitive operations.

However, significant concerns arise from the attack surface analysis. The presence of 10 AJAX handlers without authentication checks creates a direct entry point for unauthenticated attackers. While the taint analysis shows no critical or high severity flows, the 11 flows with unsanitized paths warrant attention, as they could potentially lead to vulnerabilities if not properly handled by the plugin's internal logic. The past vulnerability history, including a high severity "PHP Remote File Inclusion" and a "Cross-site Scripting" vulnerability, coupled with the fact that a recent vulnerability was recorded, suggests a pattern of past security weaknesses that need continuous vigilance.

In conclusion, while "easy-invoice" v2.1.12 has implemented some robust security measures, the unauthenticated AJAX endpoints and the history of critical vulnerability types are notable weaknesses. The plugin is actively maintained and has no currently unpatched CVEs, which is positive. However, the identified unauthenticated entry points and past vulnerability trends necessitate careful review and mitigation to reduce the overall risk.