CVE-2026-93921

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 v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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-L526
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-via-dynamic-icon-endpoint
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-whcx-xxqh-c838

Configurations

No configuration.

History

21 Sep 2026, 15:17

Type	Values Removed	Values Added
References	~~() https://github.com/siyuan-note/siyuan/security/advisories/GHSA-whcx-xxqh-c838 -~~	() https://github.com/siyuan-note/siyuan/security/advisories/GHSA-whcx-xxqh-c838 -

19 Sep 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-19 00:16

Updated : 2026-09-21 15:17

NVD link : CVE-2026-93921

Mitre link : CVE-2026-93921

CVE.ORG link : CVE-2026-93921

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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