CVE-2026-73610

SiYuan before v3.7.4 Information Disclosure via Local Storage

MEDIUM
5.8
CVSS Score
Published: August 13, 2026 at 11:28 AM UTC
Updated: October 24, 2026 at 03:10 PM UTC
2 products affected across 2 vendorsSiyuanSiyuan

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Severity
MEDIUM5.8
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

SiYuan before v3.7.4 contains an information disclosure vulnerability in the local storage filter that returns the administrator's entire storage map with only three keys sanitized. Unauthenticated attackers or publish readers can retrieve closed-tab history, search keywords, private document identifiers, and expanded folder paths by calling the getLocalStorage endpoint.

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
0 ≤ v < 3.7.40
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

SSVCPoCNot automatablePartial 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-639

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