Medium severity6.5NVD Advisory· Published Aug 14, 2026· Updated Aug 26, 2026
CVE-2026-72812
CVE-2026-72812
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/siyuan-note/siyuan/kernelGo | < 0.0.0-20260723002528-7d273c271ce1 | 0.0.0-20260723002528-7d273c271ce1 |
Affected products
2- Range: <v3.7.4
- ghsa-coordsRange: < 0.0.0-20260723002528-7d273c271ce1
Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-wgwx-479j-23vqghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-72812ghsaADVISORY
- github.com/siyuan-note/siyuan/commit/7d273c271ce193b9d3ee5751b596b8093ba84adaghsaWEB
- github.com/siyuan-note/siyuan/security/advisories/GHSA-wgwx-479j-23vqnvdWEB
- www.vulncheck.com/advisories/siyuan-before-missing-authorization-via-refreshbacklinknvdWEB
News mentions
1- Siyuan Note: 25 Vulnerabilities Including RCE and Auth Bypass Disclosed TogetherVypr Intelligence · Aug 15, 2026