CVE-2026-73608Public exploitNetwork attack vector

Restricted database row disclosure via missing authorization

Published Aug 13, 2026 · Updated Aug 13, 2026

Missing authorization in SiYuan's getAttributeViewSearchTarget endpoint allows remote attackers to read restricted database rows. The route applies CheckAuth but omits read-only, publish-access, and encrypted-notebook checks before searching every field and returning a matching row. Reachability requires a development-branch build in publish mode and a database identifier from an allowed page; no released stable version is affected.

CVSS severity9.2
Critical
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in SiYuan's getAttributeViewSearchTarget endpoint allows remote attackers to read restricted database rows. The route applies CheckAuth but omits read-only, publish-access, and encrypted-notebook checks before searching every field and returning a matching row. Reachability requires a development-branch build in publish mode and a database identifier from an allowed page; no released stable version is affected.

The record

CVE
CVE-2026-73608
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
SiYuan Note
Product
SiYuan
Classifications
CWE-862, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.7.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SiYuan Note · SiYuanversion=0 <3.7.4

Published CVSS scores

8.6VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
9.2VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1213Data from Information Repositories

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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