VULNERABILITY INTELLIGENCE
CVE-2026-72812
CVSS score6.5 MEDIUM
EPSS probability0.38%
CISA KEVNot currently listed
Published2026-08-14
Last modified2026-08-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
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.
Weakness classification
- disclosure@vulncheck.com: CWE-862