CVE-2026-104410: Auth Bypass (CVSS 7.5)

Description

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0038

Probability of exploitation

0.30%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-778g-gq49-fxxj https://www.vulncheck.com/advisories/siyuan-before-3.8.5-information-disclosure-via-api-export-preview https://github.com/siyuan-note/siyuan/security/advisories/GHSA-778g-gq49-fxxj

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-104410? +

CVE-2026-104410 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0038, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-104410? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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