Vulnerability · Published Aug 13, 2026 · Assigned by VulnCheck

CVE-2026-73607SiYuan before v3.7.4 Information Disclosure via getOutlineStorage

Medium 5.8

In plain English

A medium-severity missing authorization in siyuan from siyuan-note. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.8Medium

Exploit odds (30 days)0.3%top 83.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the /api/storage/getOutlineStorage endpoint that performs no authorization checks. Attackers can retrieve outline state including heading identifiers for any document by supplying its identifier, even for documents forbidden to the requester.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/siyuan-note/siyuan/kernel	0.0.0-20260812083335-251596fc0de2	GHSA-53fp-9jmv-227g
Go	github.com/siyuan-note/siyuan/kernel	0.0.0-20260812083335-251596fc0de2	GO-2026-6624

Affected products (as reported)

Vendor	Product	Versions
siyuan-note	siyuan	0 – before 3.7.4

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

References

GitHub Security Advisory (GHSA-53fp-9jmv-227g) vendor-advisory
VulnCheck Advisory: SiYuan before v3.7.4 Information Disclosure via getOutlineStorage third-party-advisory