🔒 Fix loose type comparison vulnerability in Insee validation#206
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* Replaced `==` and `!=` with strict `===` and `!==` in `src/IsoCodes/Insee.php`. * Fixed type coercion vulnerabilities when checking department codes extracted via regex. * Ensure both sides of the `clef` check are strings before strict comparison. * Added a test case in `tests/IsoCodes/Tests/InseeTest.php` to verify the logic remains robust and correctly invalidates wrong checksums. Co-authored-by: ronanguilloux <313677+ronanguilloux@users.noreply.github.com>
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🎯 What: The
IsoCodes\Inseevalidator contained loose type comparisons (==and!=) when evaluating thedepartementcode extracted via regex and when comparing the calculatedclefagainst the providedclef.0 == '0abc'). While the initialpreg_matchlimits the input somewhat, this is an important defense-in-depth measure.🛡️ Solution: Updated the
switchstatement insrc/IsoCodes/Insee.phpto use strict comparisons (===) with string literals (sincepreg_matchreturns strings). Also updated theclefcomparison to explicitly cast both values to strings before strictly comparing them ((string) $clef !== (string) $return['clef']). Added a test case inInseeTest.phpfor a wrong checksum to ensure the logic remains intact.PR created automatically by Jules for task 6045279218361980663 started by @ronanguilloux