PHP 8.5.7 `levenshtein()` signed-integer overflow

Posted by Khashayar Fereidani on Jun 20

# PHP 8.5.7 `levenshtein()` signed-integer overflow



**Author:** Khashayar Fereidani

**Disclosure Date:** 2026-06-18

**Advisory:**



## Description



The `levenshtein()` function calculates the Levenshtein distance

between two strings, optionally accepting custom costs for insertion,

replacement, and deletion operations. In PHP 8.5.7, the...