High severity · published Aug 18, 2026
CVE-2026-74906
SiYuan before v3.7.4 Incorrect Authorization via Publish Access
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
SiYuan before v3.7.4 contains an incorrect authorization vulnerability in eight publish-mode reader-facing endpoints that filter results using the visibility list instead of the disabled list. Anonymous visitors can discover and read content from documents explicitly marked as forbidden from publishing by accessing search, backlink, asset content, saved criteria, recent documents, graph, and tag endpoints.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SI
siyuan · siyuan-note
before 3.7.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74906
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-74906
github.com
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-48p5-pffc-5r9p
www.vulncheck.com
https://www.vulncheck.com/advisories/siyuan-before-incorrect-authorization-via-publish-access
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