Vulnerability Description
SiYuan versions through 3.8.4 fail to enforce publish access control in the getDynamicIcon endpoint, allowing read-only token holders to access document metadata. Attackers can call the endpoint with type=8 and crafted content to read block titles, names, aliases, and hierarchical paths of restricted documents via template injection.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/siyuan-note/siyuan
- https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/api/icon.go#L546-L549
- https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/api/router.go#L51
- https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/template.go#L485-
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-whcx-xxqh-c838
- https://www.vulncheck.com/advisories/siyuan-through-3.8.4-access-control-bypass-
FAQ
What is CVE-2026-93921?
CVE-2026-93921 is a vulnerability with a CVSS score of 4.3 (MEDIUM). SiYuan versions through 3.8.4 fail to enforce publish access control in the getDynamicIcon endpoint, allowing read-only token holders to access document metadata. Attackers can call the endpoint with ...
How severe is CVE-2026-93921?
CVE-2026-93921 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-93921?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.