CVE-2026-73048 MEDIUM

CVE-2026-73048: SiYuan before v3.7.4 Information Disclosure via getRefIDsByFileAnnotationID

Vendor Siyuan-Note

Product siyuan

Weakness CWE-862 · Missing authorization

Published August 14, 2026

Last update August 14, 2026

View on NVD All CVEs

CVSS base score

6.9/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality —

Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N

What the vulnerability does

01Description

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the getRefIDsByFileAnnotationID endpoint that returns block identifiers citing PDF annotations without publish-access filtering. Attackers can extract block identifiers from restricted documents by supplying annotation identifiers visible in published pages, revealing citation relationships across forbidden and password-protected tiers.

Key dates

02Disclosure timeline

August 14, 2026 CVE published

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-73048 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/862.html AskarLabs — CWE-862 write-up Missing Authorization

Related vulnerabilities

CVE-2026-73048: SiYuan before v3.7.4 Information Disclosure via getRefIDsByFileAnnotationID

01Description

02Disclosure timeline

03References

04Related CVE