[CVE-2026-74902] SiYuan before v3.7.4 contains a cross-site scripting vulnerability in the file upload validation flo…

Descripción técnica

SiYuan before v3.7.4 contains a cross-site scripting vulnerability in the file upload validation flow that fails to escape filenames before inserting them into HTML via insertAdjacentHTML. Attackers can craft a malicious filename containing script payloads that execute with full OS command access when a user drags, drops, or pastes the file into the editor.

Puntuación CVSS

Score: 8.6/10 — Severidad: HIGH — Estado NIST: Received

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Debilidades (CWE)

CWE-79

Fuente oficial

Publicado en NIST NVD.