CVE-2026-23852

CRITICAL

9.6

Descripcion

SiYuan is a personal knowledge management system. Versions prior to 3.5.4 have a stored Cross-Site Scripting (XSS) vulnerability that allows an attacker to inject arbitrary HTML attributes into the `icon` attribute of a block via the `/api/attr/setBlockAttrs` API. The payload is later rendered in the dynamic icon feature in an unsanitized context, leading to stored XSS and, in the desktop environment, potential remote code execution (RCE). This issue bypasses the previous fix for issue `#15970` (XSS → RCE via dynamic icons). Version 3.5.4 contains an updated fix.

Detalles CVE

Puntuacion CVSS v3.19.6

SeveridadCRITICAL

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

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioREQUIRED

Publicado1/19/2026

Ultima modificacion1/30/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

b3log:siyuan

Debilidades (CWE)

CWE-94CWE-79

Referencias

https://github.com/siyuan-note/siyuan/commit/0be7e1d4e0da9aac0da850b7aeb9b50ede7e5bdb(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-7c6g-g2hx-23vv(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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