What is CVE-2026-32704?

CVE-2026-32704 is a medium-severity vulnerability in B3log Siyuan, classified under Improper Authorization. CVSS score: 6.5/10. Published 2026-03-16.

How severe is CVE-2026-32704?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in B3log Siyuan

CVE-2026-32704

SiYuan is a personal knowledge management system. Prior to 3.6.1, POST /api/template/renderSprig lacks model.CheckAdminRole, allowing any authenticated user to execute arbitrary SQL queries against the SiYuan workspace database and exfiltrate all note content, metadata, and custom attributes. This vulnerability is fixed in 3.6.1.

Published 2026-03-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (26.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.001

Affected products

B3log Siyuan
Siyuan-Note Siyuan — versions < 3.6.1

Weakness classification (CWE)

References

github.com/siyuan-note/siyuan/security/advisories/GHSA-4j3x-hhg2-fm2x (Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-32704?: CVE-2026-32704 is a medium-severity vulnerability in B3log Siyuan, classified under Improper Authorization. CVSS score: 6.5/10. Published 2026-03-16.
How severe is CVE-2026-32704?: Medium severity. CVSS v3 base score is 6.5 out of 10.