---
id: CVE-2026-73045
title: >-
  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
summary: >-
  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 …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-307
published: '2026-08-15'
updated: '2026-08-15'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73045'
references:
  - url: >-
      https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v362-968x-gp2v
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/siyuan-before-brute-force-via-authfilepublishaccess
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-08-16T13:39:04.192Z'
epss: 0.00302
epssPercentile: 0.23186
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.