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CVE-2026-45375— SiYuan: Bazaar marketplace renders unescaped package `name` and `version` metadata, allowing stored XSS and Electron code execution

Quick assessment

Affected
siyuan-note siyuan
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SiYuan是SiYuan开源的一个个人知识管理系统。 SiYuan 3.7.0之前版本存在跨站脚本漏洞，该漏洞源于Bazaar市场渲染插件名称和版本字段时未进行HTML转义，可能导致HTML注入。

CVSS 9.0 · Critical EPSS 0.41% · P34

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
siyuan-note siyuan <= 3.6.5 affected
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I. Basic Information for CVE-2026-45375

Vulnerability Information
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Vulnerability Title
SiYuan: Bazaar marketplace renders unescaped package `name` and `version` metadata, allowing stored XSS and Electron code execution
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
SiYuan 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SiYuan是SiYuan开源的一个个人知识管理系统。 SiYuan 3.7.0之前版本存在跨站脚本漏洞，该漏洞源于Bazaar市场渲染插件名称和版本字段时未进行HTML转义，可能导致HTML注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
siyuan-note siyuan <= 3.6.5 -

II. Public POCs for CVE-2026-45375

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III. Intelligence Information for CVE-2026-45375

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Vendor Advisories for CVE-2026-45375 (1)

Same Patch Batch · siyuan-note · 2026-05-14 · 7 CVEs total

CVE-2026-44586 8.3 HIGH SiYuan: Bazaar marketplace renders unescaped package author metadata, allowing XSS and Ele
CVE-2026-45147 4.3 MEDIUM SiYuan: Broken access control in SiYuan `/api/tag/getTag` — Reader role can mutate `Conf.T
CVE-2026-45148 4.3 MEDIUM SiYuan: Broken access control in SiYuan publish-mode Readers can enumerate metadata
CVE-2026-45371 SiYuan: SiYuan publish-mode Reader can mutate Conf and SQL index via 8 ungated APIs
CVE-2026-44670 SiYuan: Stored XSS via Attribute View name to Electron renderer RCE in SiYuan
CVE-2026-44588 SiYuan: URL-encoded title bypasses `escapeAriaLabel`, decoded by `decodeURIComponent` into

IV. Related Vulnerabilities

Same product: siyuan
Same vendor: siyuan-note
Same weakness: CWE-79

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