CVE-2026-82651
Medium
Description
SiYuan before v3.8.1 does not apply the IsForbiddenAbsPath guard (introduced in GHSA-c8r8-95hg-mp34) to the /history/*path and /repo/diff/*path endpoints in kernel/server/serve.go. These routes require admin authentication but construct file paths independently, so an authenticated administrator can retrieve historical snapshots of sensitive files that the guard is meant to block, including data/.siyuan/publishAccess.json (plaintext publish-mode passwords) and files under data/templates/.
SeverityMedium
CVSS4.9
Exploit probability—
ProductGithub.com/siyuan-note/siyuan/kernel
PublishedAug 30, 2026
First seenAug 30, 2026
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- github.com/siyuan-note/siyuan/kernel0.0.0-20260816034002-035bf9a8c311 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/siyuan-note/siyuan/kernelGo | v < 0.0.0-20260816034002-035bf9a8c311 | 0.0.0-20260816034002-035bf9a8c311 |
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