Information Exposure in SiYuan Prior to Version 3.7.4
CVE-2026-74799

9.2CRITICAL

Key Information:

Vendor

Siyuan-note

Status
Siyuan
Vendor
CVE Published:
17 August 2026

What is CVE-2026-74799?

SiYuan versions prior to 3.7.4 allow unauthenticated access to debug endpoints when not operating in 'prod' mode. This misconfiguration exposes sensitive in-memory information, including AccessAuthCode and API keys from AI providers, potentially compromising the security of user data and application integrity.

Affected Version(s)

siyuan 0 < 3.7.4

siyuan 3.7.4

References

https://github.com/siyuan-note/siyuan/security/advisories...
vendor-advisory
https://www.vulncheck.com/advisories/siyuan-before-unauth...
third-party-advisory

CVSS V4

Score:
9.2
Severity:
CRITICAL
Confidentiality:
High
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

alham-rizvi
.