MEDIUM 5.3 NVD
CVE-2026-74903
SiYuan before v3.7.4 contains an insufficient access control vulnerability in the /api/lute/spinBlockDOM endpoint, which is guarded only by CheckAuth middleware
SiYuan before v3.7.4 contains an insufficient access control vulnerability in the /api/lute/spinBlockDOM endpoint, which is guarded only by CheckAuth middleware instead of CheckAdminRole like its sibling endpoint. Authenticated users with RoleEditor or RoleReader roles can invoke the endpoint to transform arbitrary DOM input, and large payloads cause endpoint starvation through per-path mutex serialization.
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-3j8q-5c8c-grwm
- https://www.vulncheck.com/advisories/siyuan-before-insufficient-access-control-via-spinblo
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-08-18 via NVD.
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