I agree with everything that Corion and marto have written. Checkmarx is giving you the error, so Checkmarx also needs to tell you how to fix it.

As I indicated, above I was only guessing what the problem might be, and in this case I can also only guess that maybe Checkmarx wants you to confirm that $err_rate really does contain a float. But Perl is notoriously hard to parse, so I have no idea what code the tool would accept for that check, so again, you'd have to look at the Checkmarx documentation or ask them. And if Corion is right that %% is the problem, then the tool is giving you a false positive (which proves my point), and you need to talk to Checkmarx support.

In reply to Re^3: Uncontrolled Format String - Checkmarx issue by haukex
in thread Uncontrolled Format String - Checkmarx issue by Rishi2Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.