CVE-2026-33347

MEDIUM

6.1

Descripcion

league/commonmark is a PHP Markdown parser. From version 2.3.0 to before version 2.8.2, the DomainFilteringAdapter in the Embed extension is vulnerable to an allowlist bypass due to a missing hostname boundary assertion in the domain-matching regex. An attacker-controlled domain like youtube.com.evil passes the allowlist check when youtube.com is an allowed domain. This issue has been patched in version 2.8.2.

Detalles CVE

Puntuacion CVSS v3.16.1

SeveridadMEDIUM

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioREQUIRED

Publicado3/24/2026

Ultima modificacion4/8/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

thephpleague:commonmark

Debilidades (CWE)

CWE-79CWE-185CWE-918

Referencias

https://github.com/thephpleague/commonmark/commit/59fb075d2101740c337c7216e3f32b36c204218b(security-advisories@github.com)

https://github.com/thephpleague/commonmark/releases/tag/2.8.2(security-advisories@github.com)

https://github.com/thephpleague/commonmark/security/advisories/GHSA-hh8v-hgvp-g3f5(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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