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Security Issues in Perl Scripts, Basic user input vulnerabilities, security problems

https://www.cgisecurity.com/lib/sips.html

One big source of security problems in Perl scripts is improperly validated (or unvalidated) user input. Any time your program might take input from an untrusted user, even indirectly, you should be cautious. For example, if you are writing CGI scripts in Perl, expect that malicious users will send you bogus input.

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