HIGH 8.7 NVD
CVE-2026-105830
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 TableStar
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.
References
- https://github.com/thephpleague/commonmark/security/advisories/GHSA-3q6v-r5mr-hxv8
- https://www.vulncheck.com/advisories/league-commonmark-2.0.0-before-2.10.2-quadratic-dos-v
- https://github.com/thephpleague/commonmark/security/advisories/GHSA-3q6v-r5mr-hxv8
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-10-08 via NVD.
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