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THREAT OPS › Threat News › [NVD] CVE-2026-73046 (CRITICAL 9.8) — SiYuan before v3.7.4 improperly restricts excessive authentication attempts in the CheckAuth() middleware. The HTTP Basic Authentication branch, which guards nearly the entire /api/* surface, accepts the workspace access code (Conf.AccessAuthCode) as the Basic Auth password but n

[NVD] CVE-2026-73046 (CRITICAL 9.8) — SiYuan before v3.7.4 improperly restricts excessive authentication attempts in the CheckAuth() middleware. The HTTP Basic Authentication branch, which guards nearly the entire /api/* surface, accepts the workspace access code (Conf.AccessAuthCode) as the Basic Auth password but n

mednvdPublished 2026-08-15

CVE-2026-73046 CVSS: 9.8 CRITICAL Published: 2026-08-15T22:16:54.600

SiYuan before v3.7.4 improperly restricts excessive authentication attempts in the CheckAuth() middleware. The HTTP Basic Authentication branch, which guards nearly the entire /api/* surface, accepts the workspace access code (Conf.AccessAuthCode) as the Basic Auth password but never consults the CAPTCHA/lockout gate or incremen

Indicators of compromise

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-73046