CVE-2026-74868

SiYuan versions before 3.7.4 contain an unthrottled brute-force vulnerability in the Publish Service Basic Auth implementation (PublishServiceTransport.RoundTrip() in kernel/server/proxy/publish.go). The Publish Service runs on a separate, unauthenticated-by-default listener (default TCP port 6808) and gates named publish-viewer accounts (Conf.Publish.Auth.Accounts) with Basic Auth that has no rate limiting, per-account lockout, or backoff. Unauthenticated remote attackers can submit unlimited password guesses against named accounts to gain access to published notes/notebooks.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-phg7-xcr4-q5wg
https://www.vulncheck.com/advisories/siyuan-before-brute-force-authentication-via-publish-service
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-phg7-xcr4-q5wg

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-17 11:16

Updated : 2026-08-26 16:57

NVD link : CVE-2026-74868

Mitre link : CVE-2026-74868

CVE.ORG link : CVE-2026-74868

JSON object : View

Products Affected

No product.

CWE

CWE-307

Improper Restriction of Excessive Authentication Attempts

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