SEPTEMBER 19, 2026
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Case File

CVE-2026-74868

HIGH · CVSS 7.5 EPSS 0.38% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-17 · Last synced 2026-09-16

CyberRota Analysis

AI-Generated

Versions of SiYuan prior to 3.7.4 are vulnerable to an unthrottled brute-force attack due to inadequate rate limiting in the Publish Service's Basic Auth implementation. This flaw allows unauthenticated remote attackers to repeatedly guess passwords for publish-viewer accounts, potentially compromising access to sensitive notes and notebooks. Organizations using affected versions should prioritize remediation to protect against unauthorized access and data exposure.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-74868
Severity
HIGH
CVSS
7.5
EPSS
0.38%

Original NVD Description

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.