CVE-2026-82652: SiYuan before v3.8.1 Information Disclosure via Publish Access

Severity: medium (CVSS 5.3 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: 2026-08-30 · updated 2026-08-31
Weakness: CWE-668

Description

SiYuan before v3.8.1 fails to filter invisible-tier content from SQL embed blocks, attribute-view keys, and attribute-view backlinks in publish mode. Anonymous readers can enumerate invisible content through these three listing mechanisms despite admin configuration marking content unlisted.

Affected products

siyuan-note siyuan: before 3.8.1 — fixed in 3.8.1

How to fix

Upgrade to a fixed version: siyuan-note siyuan 3.8.1. Check the vendor advisory for mitigations.

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-2pgf-jv7c-q7rx
https://www.vulncheck.com/advisories/siyuan-before-3.8.1-information-disclosure-via-publish-access

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