https://feed.craftedsignal.io/tags/regex/Trending threats, MITRE ATT&CK coverage, and detection metadata — refreshed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioFri, 27 Mar 2026 12:00:00 +0000https://feed.craftedsignal.io/briefs/2026-03-regex-dos/Fri, 27 Mar 2026 12:00:00 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-03-regex-dos/CVE-2026-4926 describes a denial-of-service vulnerability due to an inefficient regular expression complexity issue when handling multiple sequential optional groups, leading to exponential growth and resource exhaustion.<p>CVE-2026-4926 exposes a denial-of-service vulnerability stemming from inefficient regular expression complexity. This flaw arises when a regular expression contains multiple sequential optional groups, denoted by curly brace syntax (e.g., <code>{a}{b}{c}:z</code>). The vulnerability lies in the exponential growth of the generated regular expression, leading to excessive resource consumption and ultimately causing a denial-of-service condition. This issue was introduced prior to version 8.4.0 and poses a…</p> highadvisorydenial-of-serviceregexcve