What’s Vulnerable › Vulnerabilities

CVE-2026-73608: SiYuan v3.7.4-alpha.2 Authorization Bypass via getAttributeViewSearchTarget

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-10-29
• Weakness: CWE-862

Description

SiYuan's development branch (endpoint introduced by commit 9b8e8956f, not present in v3.7.3 or master, patched in v3.7.4-alpha.3) contains a missing-authorization vulnerability in the /api/av/getAttributeViewSearchTarget endpoint. The route is registered with CheckAuth only and performs no authorization checks (no CheckReadonly, no publish-access or encrypted-notebook gating). Given a database identifier taken from a published page and a keyword, an anonymous reader can query the endpoint to retrieve matching database row content, including rows that publish filters (FilterAttributeViewByPublishAccess) would otherwise withhold. No released stable version is affected.

Affected products

• siyuan-note siyuan: from 3.7.4-alpha.2 before 3.7.4-alpha.3 — fixed in 3.7.4-alpha.3

How to fix

Upgrade to a fixed version: siyuan-note siyuan 3.7.4-alpha.3. Check the vendor advisory for mitigations.

References

• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-9cqf-hhrq-7v45
• https://www.vulncheck.com/advisories/siyuan-before-authorization-bypass-via-getattributeviewsearchtarget
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-9cqf-hhrq-7v45

Get alerted when CVE-2026-73608 or the next vulnerability affects your stack