CVE-2026-105830

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-400

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Full discourse1 post

DFIR Lab@DFIR_Lab1d
🚨 HIGH severity CVE-2026-105830 (CVSS 7.5): league/commonmark v2.0.0-2.10.1 vulnerable to DoS via GitHub Flavored Markdown Table extension. Unauthenticated attackers can exhaust PHP worker CPU. Upgrade to v2.10.2+ immediately. #CVE #Vulnerability #PatchNow https://t.co/ETUrFBUf8d
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