What is CVE-2026-54070?

CVE-2026-54070 is a high-severity vulnerability in Siyuan-note Siyuan, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-06-24.

How severe is CVE-2026-54070?

High severity. CVSS v3 base score is 7.1 out of 10.

XSS in Siyuan-note Siyuan

CVE-2026-54070

SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, renderPackageREADME in kernel/bazaar/readme.go renders a Bazaar package README from Markdown to HTML with the lute engine and SetSanitize(true). The lute saniti…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L.

Affected products

Siyuan-note Siyuan — versions < 3.7.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting
CWE-184 — Incomplete List of Disallowed Inputs

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-54070?: CVE-2026-54070 is a high-severity vulnerability in Siyuan-note Siyuan, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-06-24.
How severe is CVE-2026-54070?: High severity. CVSS v3 base score is 7.1 out of 10.