Vulnerability · Published Mar 26, 2026 · Assigned by GitHub_M
CVE-2026-33669SiYuan has Arbitrary Document Reading within the Publishing Service
Critical 9.8
In plain English
A critical-severity out-of-bounds read in siyuan from siyuan-note. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.5%top 54.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
SiYuan is a personal knowledge management system. Prior to version 3.6.2, document IDs were retrieved via the /api/file/readDir interface, and then the /api/block/getChildBlocks interface was used to view the content of all documents. Version 3.6.2 patches the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/siyuan-note/siyuan/kernel | no fix listed | GHSA-34xj-66v3-6j83 |
| Go | github.com/siyuan-note/siyuan/kernel | no fix listed | GHSA-34xj-66v3-6j83 |
| Go | github.com/siyuan-note/siyuan/kernel | no fix listed | GO-2026-4842 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| siyuan-note | siyuan | < 3.6.2 |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-34xj-66v3-6j83 x_refsource_CONFIRM