Is CVE-2026-45375 actively exploited?

No active exploitation of CVE-2026-45375 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-45375 be exploited remotely?

Yes. CVE-2026-45375 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-45375?

CVE-2026-45375 has a CVSS score of 9.0 (CRITICAL).

HOME VULNERABILITIESCVE-2026-45375

CRITICAL

CVE-2026-45375

CWE-79Published: May 14, 2026· Updated: May 16, 2026

9.0

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.5th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-45375 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.0.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.