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CVE-2026-49851

HIGH · CVSS 7.5 EPSS %0.35 Public Exploit

Kaynak: NVD + CISA KEV + EPSS · Yayınlanma: 2026-06-24T18:17:18.937 · Çekilme zamanı: 2026-06-30T18:32:33.769615+00:00

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Public Exploit Sinyali

Bu CVE için açıklama veya referanslarda public exploit / PoC / GitHub / Metasploit sinyali tespit edildi.

GitHub PoC Linkleri

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CVE
CVE-2026-49851
Severity
HIGH
CVSS
7.5
EPSS
%0.35

Orijinal NVD Açıklaması

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, Mistune is vulnerable to a CPU exhaustion DoS due to superlinear (approximately O(n²)) behavior in parse_link_text. When parsing Markdown containing many consecutive [ characters, parse_link_text repeatedly scans the input using a regex search inside a loop. Each iteration re-scans a large portion of the remaining string, resulting in quadratic-time behavior. An attacker-controlled Markdown input can therefore trigger excessive CPU usage with a very small payload. This vulnerability is fixed in 3.3.0.