Vulnerability · Published Aug 12, 2026 · Assigned by VulnCheck

CVE-2026-72792SiYuan before v3.7.4 Information Disclosure via Tag API

Medium 5.8

In plain English

A medium-severity incorrect authorization in siyuan from siyuan-note. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% 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 74.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

SiYuan before v3.7.4 contains an information disclosure vulnerability in the /api/tag/getTag endpoint that returns tag labels and occurrence counts from password-protected documents to unauthenticated readers. Attackers can enumerate tag vocabulary and internal terminology from password-protected documents by calling the tag endpoint without providing the document's publish password.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/siyuan-note/siyuan/kernel	0.0.0-20260726002639-4515fa257cfa	GHSA-mp7r-57w4-5qm3
Go	github.com/siyuan-note/siyuan/kernel	0.0.0-20260726002639-4515fa257cfa	GO-2026-6427

Affected products (as reported)

Vendor	Product	Versions
siyuan-note	siyuan	0 – before 3.7.4

Weakness: CWE-863 · 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-mp7r-57w4-5qm3) vendor-advisory
VulnCheck Advisory: SiYuan before v3.7.4 Information Disclosure via Tag API third-party-advisory