[CVE-2026-74800] SiYuan before v3.7.4 fails to set Content-Disposition and X-Content-Type-Options headers when servin…

Descripción técnica

SiYuan before v3.7.4 fails to set Content-Disposition and X-Content-Type-Options headers when serving arbitrary file assets, allowing stored cross-site scripting attacks. Authenticated attackers can upload HTML files as assets and execute scripts with full kernel API access when the workspace owner opens the asset link.

Puntuación CVSS

Score: 9/10 — Severidad: CRITICAL — Estado NIST: Received

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

Debilidades (CWE)

CWE-79

Fuente oficial

Publicado en NIST NVD.