CVE-2026-72795: SiYuan before v3.7.4 Information Disclosure via Embed Block

Severity: high (CVSS 8.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-12 · updated 2026-10-24
Weakness: CWE-862

Description

SiYuan versions before v3.7.4 fail to filter embedded block content by publish access in the getBlockDOMWithEmbed and getBlockDOMsWithEmbed endpoints. Attackers can request published blocks containing embed queries to read content from password-protected, hidden, or forbidden documents without authorization.

Affected products

siyuan-note siyuan: before 3.7.4 — fixed in 3.7.4

How to fix

Upgrade to a fixed version: siyuan-note siyuan 3.7.4. Check the vendor advisory for mitigations.

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-h6w7-xxcf-w2mq
https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-embed-block
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-h6w7-xxcf-w2mq

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