CVE Watch20 oct 2026

CVE-2026-111758

markdown-it is a Markdown parser. From versions 14.1.0 to before 14.3.3, and 15.0.0 to before 15.0.3, a link reference definition whose labe

CVSS

7.5

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 20 oct 2026 · Última mod.: 20 oct 2026 · CWE-400 · CWE-407

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

markdown-it is a Markdown parser. From versions 14.1.0 to before 14.3.3, and 15.0.0 to before 15.0.3, a link reference definition whose label or title is never closed is O(n²) with default options. Continuation lines are pulled lazily with str += lineContent in src/rules_block/reference.ts, and the subsequent charCodeAt and slice calls flatten the V8 cons-string, copying everything collected so far; this runs before the rule decides the definition is invalid. No options are required to trigger it. This issue has been patched in versions 14.3.3 and 15.0.3.

Referencias oficiales

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