high7.5
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 TableSta…
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| League/Commonmark From 2.0.0 | before 2.10.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.