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.
Metrics
Affected Vendors & Products
References
History
Thu, 08 Oct 2026 17:30:00 +0000
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ssvc
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Thu, 08 Oct 2026 14:15:00 +0000
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| 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. | |
| Title | league/commonmark 2.0.0 before 2.10.2 Quadratic DoS via TableStartParser | |
| First Time appeared |
Thephpleague
Thephpleague commonmark |
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| Weaknesses | CWE-400 | |
| CPEs | cpe:2.3:a:thephpleague:commonmark:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Thephpleague
Thephpleague commonmark |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-08T14:10:31.055Z
Updated: 2026-10-08T17:03:50.815Z
Reserved: 2026-10-05T21:59:09.591Z
Link: CVE-2026-105830
Updated: 2026-10-08T17:03:25.566Z
Status : Awaiting Analysis
Published: 2026-10-08T15:17:35.340
Modified: 2026-10-08T21:33:42.423
Link: CVE-2026-105830
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