CVE-2026-66012: siyuan 0 to before 3.7.2

CVE-2026-66012. CVSS 3.1 base score 10.0 (CRITICAL, Vendor/CNA). EPSS 0.00764 (percentile 0.54916), scored 22-Oct-2026.

Affected technology

siyuan · 0 to before 3.7.2
siyuan-note

Description’s affected range: before v3.7.2

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

The source says when the Publish server is enabled in anonymous mode (Conf.Publish.Enable=true and Conf.Publish.Auth.Enable=false), the Publish reverse proxy attaches an anonymous RoleReader JWT to proxied requests, allowing a remote unauthenticated attacker to reach /mcp. Vendor/CNA’s CVSS 4.0 assessment (base score 10.0/10) rates confidentiality, integrity and availability impact as high.

Published 24-Oct-2026 15:08 UTC

CWE: CWE-862
CCR priority: 40.2 /100 (P3)
CVSS 3.1: 10.0 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H · Vendor/CNA
EPSS: 0.00764 · percentile 0.5498 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-66012.html