What is CVE-2026-104410?

CVE-2026-104410 is a high-severity vulnerability in Siyuan-Note Siyuan, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-10-02.

How severe is CVE-2026-104410?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Siyuan-Note Siyuan

CVE-2026-104410

SiYuan before 3.8.5 contains an information disclosure vulnerability that allows publish readers to read password-protected and publish-disabled database rows via the /api/export/preview endpoint. Attackers can request an export preview of a public document embedding a database view to obtain protected rows' primary-key text and cell values.

Vulnerability class: Broken Access Control

Published 2026-10-02 · last modified 2026-10-02.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Siyuan-Note Siyuan

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

github.com/siyuan-note/siyuan/security/advisories/GHSA-778g-gq49-fxxj (vendor-advisory)
www.vulncheck.com/advisories/siyuan-before-3.8.5-information-disclosure-via-api… (third-party-advisory)

Frequently asked questions

What is CVE-2026-104410?: CVE-2026-104410 is a high-severity vulnerability in Siyuan-Note Siyuan, classified under Missing Authorization. CVSS score: 7.5/10. Published 2026-10-02.
How severe is CVE-2026-104410?: High severity. CVSS v3 base score is 7.5 out of 10.