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The Regular Expression Denial of Service (ReDoS) cheat-sheet | by James Davis | Level Up Coding

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What is ReDoS, and how to deal with it?

The Regular Expression Denial of Service (ReDoS) cheat-sheet James Davis 11 min read · May 23, 2020 -- 1 Listen Share Introduction This post is intended as a “technical two-pager” to summarize a security vulnerability called Regex-based Denial of Service (AKA Regex DoS , ReDoS ). There are a variety of write-ups about ReDoS, but I’m not aware of a good one-stop-shop with a higher-level treatment of all aspects of the subject. I have included links at the end to more detailed treatments. I have used headings liberally to help you navigate to your issue. What is a regular expression? A regular e

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