CVE-2026-118680

MEDIUM
MEDIUM Priority: 0.03 BB Relevance: 57/100
Published: 2026-10-28 Modified: 2026-10-28 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: High
UI: None
AT: Present
VC: High
VI: None
VA: None

Description

SiYuan 3.8.7 through 3.8.8 fails to normalize Windows GLOBALROOT device-namespace aliases, bypassing the IsSensitivePath denylist. Attackers can invoke importStdMd with a GLOBALROOT-prefixed path to copy the API token and TLS private key into the publicly served assets directory.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
siyuan-note siyuan 3.8.7

Bug Bounty Relevance

57 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.9 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS — Exploitation Probability

0.46%
Raw Score 0.004590
Percentile 39.7%
Date 2026-10-29

Intelligence Sources

mitre ref →
nvd ref →