SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan's Bazaar (community marketplace) renders the name and version fields of a package's plugin.json (and the equivalent theme.json / template.json / widget.json / icon.json) into the Settings → Marketplace UI without HTML escaping. The kernel-side helper sanitizePackageDisplayStrings in kernel/bazaar/package.go HTML-escapes only Author, DisplayName, and Description — Name and Version flow through to the renderer raw. The frontend at app/src/config/bazaar.ts substitutes them into HTML template strings via ${item.preferredName} / ${data.name} / v${data.version} and assigns the result to innerHTML. As a consequence, malicious HTML in either field is parsed and executed when a user opens the marketplace tab. This vulnerability is fixed in 3.7.0.
CVE-2026-45375
CRITICALNVD 9.09.0—
EchelonGraph scoreHIGH confidence
Score 9.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-13. NVD baseline CVSS 9.0; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.0
- CVSS v3
- 9.0
- EG Score
- 9.0(high)
- EPSS
- 3.6%
- KEV
- Not listed
Published
May 14, 2026
Last Modified
May 16, 2026
References (2)
- security-advisories@githubhttps://github.com/siyuan-note/siyuan/security/advisories/GHSA-27qc-m5gf-jv5r
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/siyuan-note/siyuan/security/advisories/GHSA-27qc-m5gf-jv5r
Frequently asked(5)
What is CVE-2026-45375?
CVE-2026-45375 is a critical vulnerability published on May 14, 2026. SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan's Bazaar (community marketplace) renders the name and version fields of a package's plugin.json (and the equivalent theme.json / template.json / widget.json / icon.json) into the Settings → Marketplace UI without…
When was CVE-2026-45375 disclosed?
CVE-2026-45375 was first published in the National Vulnerability Database on May 14, 2026, with the most recent update on May 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45375 actively exploited?
CVE-2026-45375 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45375?
CVE-2026-45375 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2026-45375?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45375, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-45375
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