P5Verified

CVE-2026-100634: siyuan 0 to before 3.8.4

CVE-2026-100634. CVSS 3.1 base score 4.7 (MEDIUM, Vendor/CNA). EPSS 0.0047 (percentile 0.38573), scored 2026-10-06.

Affected technology

siyuan · 0 to before 3.8.4
siyuan-note

Description’s affected range: before v3.8.4 does not validate the sender or restrict recipients in the 'siyuan-send-windows' IPC handler of the Electron main process (app/electron/main.js)

Component: Not specified by the source

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

What an attacker can do

The source reports that an attacker could disrupt service. Vendor/CNA’s CVSS 4.0 assessment (base score 5.3/10) rates confidentiality and integrity impact as none; availability impact as low.

Published 2026-10-08 17:35:12.803231+00:00

CWE: CWE-862
CCR priority: 18.9 /100 (P5)
CVSS 3.1: 4.7 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L · Vendor/CNA
EPSS: 0.0047 · percentile 0.38676 · 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-2026-100634.html