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CVE-2026-73045— SiYuan before 3.7.4 Brute-Force via authFilePublishAccess

CVSS 7.5 · High EPSS 0.30% · P23

Possible ATT&CK Techniques 1AI

T1110 · Brute Force

Affected Version Matrix 2

VendorProductVersion RangeStatus
siyuan-notesiyuan< 3.7.4affected
3.7.4unaffected
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I. Basic Information for CVE-2026-73045

Vulnerability Information
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Vulnerability Title
SiYuan before 3.7.4 Brute-Force via authFilePublishAccess
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan before 3.7.4 contains an improper restriction of excessive authentication attempts vulnerability in the authFilePublishAccess endpoint that allows unauthenticated attackers to brute-force per-notebook publish passwords. Attackers can submit unbounded password guesses without rate limiting or CAPTCHA to gain access to password-protected published notebooks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
siyuan-notesiyuan 0 ~ 3.7.4 -

II. Public POCs for CVE-2026-73045

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III. Intelligence Information for CVE-2026-73045

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Vendor Advisories for CVE-2026-73045 (2)

Same Patch Batch · siyuan-note · 2026-08-15 · 11 CVEs total

CVE-2026-730469.8 CRITICALSiYuan before v3.7.4 Authentication Bypass via HTTP Basic Auth
CVE-2026-730509.0 CRITICALSiYuan before v3.7.4 Stored XSS via select option color
CVE-2026-730439.0 CRITICALSiYuan before v3.7.4 Remote Code Execution via Template Calculation
CVE-2026-730429.0 CRITICALSiYuan before v3.7.4 Remote Code Execution via Menu Metadata
CVE-2026-730419.0 CRITICALSiYuan before v3.7.4 Remote Code Execution via PDF Annotations
CVE-2026-730449.0 CRITICALSiYuan before v3.7.4 Stored Cross-Site Scripting via Column Width
CVE-2026-730539.0 CRITICALSiYuan before v3.7.4 Cross-Site Scripting via unicode2Emoji
CVE-2026-730529.0 CRITICALSiYuan before v3.7.4 Stored XSS via Attribute-View Field Names
CVE-2026-730547.5 HIGHSiYuan before v3.7.4 Authentication Bypass via WebSocket
CVE-2026-730476.2 MEDIUMsiyuan before v3.7.4 Server-Side Template Injection via attribute-view

IV. Related Vulnerabilities

Same product: siyuan
Same vendor: siyuan-note
Same weakness: CWE-307

V. Comments for CVE-2026-73045

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