CVSS 3.1
8.5 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:HCVE-2026-40318
High (8.5) in b3log siyuan. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in github.com/siyuan-note/siyuan/kernel 3.6.40.0.0-20260407035653-2f416e5253f1.
SiYuan is an open-source personal knowledge management system. In versions 3.6.3 and prior, the /api/av/removeUnusedAttributeView endpoint constructs a filesystem path using the user-controlled id parameter without validation or path boundary enforcement. An attacker can inject path traversal sequences such as ../ into the id value to escape the intended directory and delete arbitrary .json files on the server, including global configuration files and workspace metadata. This issue has been fixed in version 3.6.4.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
- CWE
- CWE-24
- Published
- Modified
- Record from
- the NVD, synced
Affected
- b3log:siyuan
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-vw86-c94w-v3x4 | Go | github.com/siyuan-note/siyuan/kernel | <3.6.40.0.0-20260407035653-2f416e5253f1 | 3.6.40.0.0-20260407035653-2f416e5253f1 |
| GO-2026-5679 | Go | github.com/siyuan-note/siyuan/kernel | all versions | no fix published |