Medium severity · published Aug 14, 2026
CVE-2026-73049
SiYuan before v3.7.4 Information Disclosure via getAttributeViewBacklinks
5.8
CVSS
0.3%
EPSS
No
On KEV
Description
SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the getAttributeViewBacklinks endpoint that consults the forbidden access list instead of the visibility list when filtering backlinks. Anonymous readers can supply a publicly visible database row identifier to discover hidden-tier documents that reference it, receiving the database name, row title, and document path of hidden documents.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% 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-2026-73049
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-73049
github.com
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-p4qw-vx5p-g984
www.vulncheck.com
https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getattributeviewbacklinks
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