What is CVE-2026-118680?

CVE-2026-118680 is a medium-severity vulnerability in Siyuan-Note Siyuan, classified under Path Traversal. CVSS score: 4.4/10. Published 2026-10-28.

How severe is CVE-2026-118680?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Path Traversal in Siyuan-Note Siyuan

CVE-2026-118680

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.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2026-10-28 · last modified 2026-10-28.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Siyuan-Note Siyuan

Weakness classification (CWE)

CWE-22 — Path Traversal

References

github.com/siyuan-note/siyuan/security/advisories/GHSA-gg3p-r4g8-vxg2 (vendor-advisory)
www.vulncheck.com/advisories/siyuan-3.8.7-through-3.8.8-path-traversal-via-glob… (third-party-advisory)

Frequently asked questions

What is CVE-2026-118680?: CVE-2026-118680 is a medium-severity vulnerability in Siyuan-Note Siyuan, classified under Path Traversal. CVSS score: 4.4/10. Published 2026-10-28.
How severe is CVE-2026-118680?: Medium severity. CVSS v3 base score is 4.4 out of 10.