What's the underlying engine and who evaluates the regexps? The engine? If so you need to ask what's safe/unsafe for that engine, not for Perl.
You should not look for dangerous stuff, you should check you only got safe stuff!
Jenda
1984 was supposed to be a warning,
not a manual!
In reply to Re: Allowing regex entries in web form to search database: Risks or gotchas?
by Jenda
in thread Allowing regex entries in web form to search database: Risks or gotchas?
by Polyglot
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