{"id":"CVE-2026-93921","published":"2026-09-19T00:16:57.553","lastModified":"2026-09-21T15:17:35.930","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.","cvssScore":4.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cwes":["CWE-862"],"vendors":[],"products":[],"references":[{"url":"https://github.com/siyuan-note/siyuan","tags":[]},{"url":"https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/api/icon.go#L546-L549","tags":[]},{"url":"https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/api/router.go#L51","tags":[]},{"url":"https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/template.go#L485-L526","tags":[]},{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-whcx-xxqh-c838","tags":[]},{"url":"https://www.vulncheck.com/advisories/siyuan-through-3.8.4-access-control-bypass-via-dynamic-icon-endpoint","tags":[]},{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-whcx-xxqh-c838","tags":[]}],"exploitRefs":[{"url":"https://github.com/siyuan-note/siyuan","tags":[]},{"url":"https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/api/icon.go#L546-L549","tags":[]},{"url":"https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/api/router.go#L51","tags":[]},{"url":"https://github.com/siyuan-note/siyuan/blob/v3.8.4/kernel/model/template.go#L485-L526","tags":[]},{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-whcx-xxqh-c838","tags":[]},{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-whcx-xxqh-c838","tags":[]}],"hasPoc":true,"ai":null}