What is GHSA-84wr-wccg-f5hp?

GHSA-84wr-wccg-f5hp is a security advisory published by GitHub Security Advisories with High severity. league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service...

Which CVE IDs does GHSA-84wr-wccg-f5hp cover?

GHSA-84wr-wccg-f5hp covers the following CVE IDs: CVE-2026-105830. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-84wr-wccg-f5hp?

GHSA-84wr-wccg-f5hp has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-84wr-wccg-f5hpHighCVSS 7.5

league/commonmark from 2.0.0 before 2.10.2 contains a quadratic-time denial of service...

Vendor

GitHub Security Advisories

Published

October 8, 2026

Last Modified

October 8, 2026

🔗 CVE IDs covered (1)

CVE-2026-105830 →

📋 Description

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 (4)

https://github.com/thephpleague/commonmark/security/advisories/GHSA-3q6v-r5mr-hxv8
https://nvd.nist.gov/vuln/detail/CVE-2026-105830
https://www.vulncheck.com/advisories/league-commonmark-2.0.0-before-2.10.2-quadratic-dos-via-tablestartparser
https://github.com/advisories/GHSA-84wr-wccg-f5hp