CVE-2026-86433highCWE-407

CVE-2026-86433: fallo de gravedad alta en thephpleague commonmark

commonmark 1.5.0 before 2.8.4 Denial of Service via Attributes

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear commonmark+ Monitorear php-league-commonmark

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

21Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 8.7epss 0.5%
commonmark versions from 1.5.0 before 2.8.4 contain a denial of service vulnerability in the Attributes extension where AttributesListener::findTargetAndDirection() performs quadratic-time sibling list scanning. Unauthenticated attackers can submit approximately 32 KB of repeated attribute blocks to cause parsing to take over 5 seconds, exhausting server resources.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Productos afectados
thephpleague · commonmark
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