P4Verified

CVE-2026-66394: siyuan 0 to before 3.7.3

CVE-2026-66394. CVSS 3.1 base score 8.7 (HIGH, Vendor/CNA). EPSS 0.00472 (percentile 0.38761), scored 2026-10-06.

Affected technology

siyuan · 0 to before 3.7.3
siyuan-note

Description’s affected range: before v3.7.3

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · Low privileges required · Passive user interaction

What an attacker can do

Authenticated attackers can execute scripts by bypassing the HTML parser-based cleaner. Vendor/CNA’s CVSS 4.0 assessment (base score 9.3/10) rates confidentiality and integrity impact as high; availability impact as none.

Published 2026-10-08 17:34:48.169643+00:00

CWE: CWE-79
CCR priority: 34.9 /100 (P4)
CVSS 3.1: 8.7 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N · Vendor/CNA
EPSS: 0.00472 · percentile 0.38868 · 2026-10-08
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-08 17:36:22.845483+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-08 17:32:11.049884+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-66394.html