SiYuan versions before v3.7.4 contain a missing authorization vulnerability in the /api/ref/refreshBacklink endpoint that allows anonymous readers to trigger persistent server-side writes. Attackers can invoke the endpoint with an attacker-controlled block ID to flush transaction queues, scan all references globally, and enqueue database writes, bypassing read-only protections and enabling resource amplification attacks.
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History
Fri, 14 Aug 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | SiYuan versions before v3.7.4 contain a missing authorization vulnerability in the /api/ref/refreshBacklink endpoint that allows anonymous readers to trigger persistent server-side writes. Attackers can invoke the endpoint with an attacker-controlled block ID to flush transaction queues, scan all references globally, and enqueue database writes, bypassing read-only protections and enabling resource amplification attacks. | |
| Title | SiYuan before v3.7.4 Missing Authorization via refreshBacklink | |
| Weaknesses | CWE-862 | |
| References |
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| Metrics |
cvssV3_1
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-08-14T11:35:25.455Z
Reserved: 2026-08-10T15:12:16.753Z
Link: CVE-2026-72812
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Weaknesses