perl-security

Prevent SQL injection in Perl DBI queries by enforcing parameterized database access with placeholders and allowlisting dynamic query components. This approach separates code from data, ensuring user input is treated strictly as values rather than executable SQL.

Perl taint mode flags untrusted external input as unsafe until explicitly validated. You untaint input safely by applying disciplined validation through regex capture groups, ensuring only allowlisted data passes through security boundaries.

Prevent XSS in Perl web scripts by applying context-appropriate output encoding and enforcing security headers. This ensures user-supplied data is safely escaped for HTML, JavaScript, or URL contexts before rendering.

Securely execute external commands in Perl by using list-form system and exec patterns instead of shell interpolation. This prevents shell metacharacter injection by passing arguments directly as distinct list elements.

Yes, you can use perlcritic for static security checks by applying security-focused policies. This enforces development guardrails by automatically flagging unsafe input handling, dangerous system calls, and injection risks.