CVE-2026-72793

High

Description

SiYuan versions before v3.7.4 fail to mask sensitive configuration fields in the /api/system/getConf endpoint, allowing anonymous or publish-reader users to obtain the session-cookie signing key, OS username via pandoc path, and encrypted-notebook key material. Attackers can forge and tamper with session cookies to impersonate users, and on instances without access-auth codes configured, escalate to administrator privileges.

SeverityHigh

CVSS8.6

Exploit probability—

ProductGithub.com/siyuan-note/siyuan/kernel

PublishedAug 12, 2026

First seenAug 12, 2026

Weakness typeCWE-522CWE-522

How to fix

Update

github.com/siyuan-note/siyuan/kernel0.0.0-20260725132049-2d8b98395a91 or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-h4v5-crx2-3cv4

Affected products

Product	Affected versions	Fixed in
github.com/siyuan-note/siyuan/kernelGo	v < 0.0.0-20260725132049-2d8b98395a91	0.0.0-20260725132049-2d8b98395a91

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