CVE-2026-73045 SiYuan before 3.7.4 Brute-Force via authFilePublishAccess
Unauthenticated attackers can brute-force publish passwords due to missing rate limiting, gaining unauthorized access to protected notebooks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73045?
CVE-2026-73045 is a high-severity authentication bypass vulnerability in siyuan-note siyuan, published on 15 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-307
Which versions are affected by CVE-2026-73045?
How do I fix CVE-2026-73045?
No fix has been published for CVE-2026-73045 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-73045 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73045 exists.
Sources
Also known as GHSA-h64j-vrf9-jpc3.