CVE-2026-73045

HIGH 7.5

SiYuan before 3.7.4 Brute-Force via authFilePublishAccess

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-307
Vendor	siyuan-note
Product	siyuan
Published	Aug 15, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

siyuan-note / siyuan

0 < 3.7.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v362-968x-gp2v vulncheck.com: https://www.vulncheck.com/advisories/siyuan-before-brute-force-via-authfilepublishaccess

Credits

🔍 alham-rizvi