CVE-2026-105830 — league/commonmark 2.0.0 before 2.10.2 Quadratic DoS via TableStartParser
league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart…
Published: 2026-10-08 · CVSS: 8.7 · CVSS 4.0
league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service vulnerability in the GitHub Flavored Markdown Table extension's TableStartParser::tryStart() block-start scan. Unauthenticated attackers can submit a large paragraph of pipe-free lines not starting with letters, forcing repeated full-buffer strpos scans that exhaust PHP worker CPU.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7