What is CVE-2026-85583?

CVE-2026-85583 is a medium-severity vulnerability, classified under Improper Link Resolution Before File Access. CVSS score: 6.5/10. Published 2026-09-04.

How severe is CVE-2026-85583?

Medium severity. CVSS v3 base score is 6.5 out of 10.

CVE-2026-85583

CVE-2026-85583

SiYuan versions before v3.8.2 contain a path traversal vulnerability in the reader-accessible file-read endpoint that follows symlinks when opening authorized asset paths. Attackers with reader role can request a logical asset under data/assets/ that is a symlink to a file outside the workspace and receive the target file bytes, bypassing workspace boundary restrictions.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

disclosure@vulncheck.com
disclosure@vulncheck.com

Frequently asked questions

What is CVE-2026-85583?: CVE-2026-85583 is a medium-severity vulnerability, classified under Improper Link Resolution Before File Access. CVSS score: 6.5/10. Published 2026-09-04.
How severe is CVE-2026-85583?: Medium severity. CVSS v3 base score is 6.5 out of 10.