CVE-2026-73048

SiYuan before v3.7.4 Information Disclosure via getRefIDsByFileAnnotationID

MEDIUM
5.8
CVSS Score
Published: August 14, 2026 at 11:35 AM UTC
Updated: August 26, 2026 at 05:11 PM UTC
2 products affected across 2 vendorsSiyuanSiyuan

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Severity
MEDIUM5.8
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 3.7.4
Affected range stops below 3.7.4, so it looks safe — our inference, not a vendor statement
v < 3.7.4
Vendor states this is fixed in 3.7.4 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.8MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-862

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