EMI Calculator Security & Risk Analysis

The "emi-calculator" plugin version 1.1 exhibits a mixed security posture. On the positive side, the static analysis reveals a clean codebase with no dangerous functions, file operations, or external HTTP requests. All SQL queries utilize prepared statements, and a high percentage of output is properly escaped, indicating good development practices for preventing common web vulnerabilities like SQL injection and XSS within the analyzed code paths. Taint analysis also shows no critical or high severity flows, which is a strong indicator of secure handling of user-supplied data.

However, significant concerns arise from the vulnerability history. The presence of one unpatched medium severity CVE, specifically related to "Missing Authorization," is a critical red flag. This suggests that despite good coding practices in other areas, there's a known security flaw that attackers could exploit to gain unauthorized access or perform actions they shouldn't. The absence of nonce checks and capability checks in the static analysis further reinforces the risk associated with authorization, as these are fundamental mechanisms for securing WordPress actions, especially for potentially sensitive operations that might be triggered by the shortcode.

In conclusion, while the plugin demonstrates strengths in preventing basic code-level vulnerabilities like SQL injection and XSS, the unpatched "Missing Authorization" CVE and the lack of explicit authorization checks in the static analysis present a substantial risk. The presence of a shortcode as the sole entry point, without any reported authentication or capability checks, could be a vector for the known vulnerability. Therefore, it is highly recommended that users update to a version that addresses this CVE or avoid using the plugin until it is patched.