Kernel: Duplicate Advisory: Missing authorization on refreshBacklink allows anonymous readers to trigger persistent server-side writes and unauthenticated resource amplification (publish mode)
Description
SiYuan versions before v3.7.4 have a missing authorization vulnerability in the /api/ref/refreshBacklink endpoint. This flaw allows anonymous users to trigger persistent server-side writes and perform resource amplification attacks by invoking the endpoint with attacker-controlled input. The advisory is a duplicate and has been withdrawn in favor of GHSA-wgwx-479j-23vq. No patch information is provided in this record.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in SiYuan note-taking software prior to version 3.7.4 involves a missing authorization check on the /api/ref/refreshBacklink API endpoint. This allows unauthenticated users to cause persistent writes on the server by flushing transaction queues and scanning references globally. The flaw bypasses read-only protections and enables resource amplification, potentially impacting server availability or integrity. The advisory is a duplicate of GHSA-wgwx-479j-23vq and has been withdrawn to preserve external references.
Potential Impact
An attacker can cause persistent server-side writes without authentication, bypassing intended read-only restrictions. This can lead to resource amplification attacks, potentially degrading server performance or availability. There is no direct confidentiality impact reported. The CVSS score is 6.5 (medium severity), reflecting the impact on integrity and availability without confidentiality loss.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory GHSA-wgwx-479j-23vq for current remediation guidance. Since this advisory is a duplicate and withdrawn, refer to the original advisory for official fixes or mitigations.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-ww86-c2qf-w8fw
- Osv Schema Version
- 1.4.0
- Ecosystems
- ["Go"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6a9ad50bacd9273b49b67cb2
Added to database: 09/04/2026, 14:26:19 UTC
Last enriched: 09/07/2026, 15:52:59 UTC
Last updated: 10/04/2026, 06:25:24 UTC
Views: 36
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