CVSS 4.0
6.9 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:NCVE-2026-82651
Medium (6.9). EPSS 0.5% chance of exploitation in the next 30 days. Fixed in github.com/siyuan-note/siyuan/kernel 0.0.0-20260816034002-035bf9a8c311.
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/.
Severity
CVSS 3.1
4.9 mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-11-01)
- CWE
- CWE-200
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-3cm4-ccvw-6xr6 | Go | github.com/siyuan-note/siyuan/kernel | <0.0.0-20260816034002-035bf9a8c311 | 0.0.0-20260816034002-035bf9a8c311 |
| GO-2026-6662 | Go | github.com/siyuan-note/siyuan/kernel | <0.0.0-20260816034002-035bf9a8c311 | 0.0.0-20260816034002-035bf9a8c311 |