CVE-2026-74868
highpriority · track · 0EPSS 0.005 · 44 %ileEUEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (4)
External citations — patches, advisories, analysis.
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-phg7-xcr4-q5wgenisa_euvd
- https://www.vulncheck.com/advisories/siyuan-before-brute-force-authentication-via-publish-serviceenisa_euvd
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-phg7-xcr4-q5wgnvd
- https://www.vulncheck.com/advisories/siyuan-before-brute-force-authentication-via-publish-servicenvd
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