CVE-2026-73045: SiYuan before 3.7.4 Brute-Force via authFilePublishAccess
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
SiYuanto a version that resolves this vulnerability.Fixed in 3.7.4 - Compensating control
Add rate limiting and CAPTCHA (or equivalent bot protection) for attempts against the authFilePublishAccess endpoint that is used to brute-force per-notebook publish passwords.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-73045?
The severity of CVE-2026-73045 is classified as high with a score of 7.5.
How do I fix CVE-2026-73045?
To mitigate CVE-2026-73045, upgrade SiYuan to version 3.7.4 or later to address the brute-force vulnerability.
What type of attack does CVE-2026-73045 involve?
CVE-2026-73045 involves brute-force attacks that exploit improper restrictions on authentication attempts.
Which endpoint is affected by CVE-2026-73045?
CVE-2026-73045 affects the authFilePublishAccess endpoint in SiYuan.
Who is impacted by CVE-2026-73045?
Unauthenticated attackers can exploit CVE-2026-73045, potentially compromising publish passwords per notebook.