CVE-2026-72803

MEDIUM 5.8

SiYuan before v3.7.4 Information Disclosure via getBlockAttrs

CVSS Score

5.8

EPSS Score

0.0%

EPSS Percentile

0th

SiYuan versions before v3.7.4 fail to enforce publish-access checks in the getBlockAttrs and batchGetBlockAttrs endpoints. Attackers can retrieve block attributes including names, aliases, memos, and custom fields from protected documents by sending POST requests with block IDs.

CWE	CWE-862
Vendor	siyuan-note
Product	siyuan
Published	Aug 12, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

siyuan-note / siyuan

0 < 3.7.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/siyuan-note/siyuan/security/advisories/GHSA-qvq9-hq6p-v378 vulncheck.com: https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getblockattrs

Credits

🔍 Shirshakhtml