Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-73053— SiYuan before v3.7.4 Cross-Site Scripting via unicode2Emoji

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团队开源的一款文档管理软件。 SiYuan 3.7.4之前版本存在跨站脚本漏洞，该漏洞源于unicode2Emoji函数未清理codepoint分支输出，可能导致跨站脚本攻击，攻击者可利用十六进制编码标记在启用了Node集成的渲染器中执行任意代码。

CVSS 9.0 · Critical EPSS 0.28% · P21

Affected Version Matrix 2

VendorProduct Version RangeStatus
siyuan-note siyuan < 3.7.4 affected
3.7.4 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-73053

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
SiYuan before v3.7.4 Cross-Site Scripting via unicode2Emoji
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan versions before v3.7.4 contain a cross-site scripting vulnerability in the unicode2Emoji function that fails to sanitize codepoint branch output. Attackers can craft document icons with hex-encoded markup that executes in the renderer with Node integration enabled, achieving arbitrary code execution on the host system.
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团队开源的一款文档管理软件。 SiYuan 3.7.4之前版本存在跨站脚本漏洞，该漏洞源于unicode2Emoji函数未清理codepoint分支输出，可能导致跨站脚本攻击，攻击者可利用十六进制编码标记在启用了Node集成的渲染器中执行任意代码。
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 0 ~ 3.7.4 -

II. Public POCs for CVE-2026-73053

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-73053

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-73053 (2)

Same Patch Batch · siyuan-note · 2026-08-15 · 11 CVEs total

CVE-2026-73046 9.8 CRITICAL SiYuan before v3.7.4 Authentication Bypass via HTTP Basic Auth
CVE-2026-73050 9.0 CRITICAL SiYuan before v3.7.4 Stored XSS via select option color
CVE-2026-73043 9.0 CRITICAL SiYuan before v3.7.4 Remote Code Execution via Template Calculation
CVE-2026-73042 9.0 CRITICAL SiYuan before v3.7.4 Remote Code Execution via Menu Metadata
CVE-2026-73041 9.0 CRITICAL SiYuan before v3.7.4 Remote Code Execution via PDF Annotations
CVE-2026-73044 9.0 CRITICAL SiYuan before v3.7.4 Stored Cross-Site Scripting via Column Width
CVE-2026-73052 9.0 CRITICAL SiYuan before v3.7.4 Stored XSS via Attribute-View Field Names
CVE-2026-73045 7.5 HIGH SiYuan before 3.7.4 Brute-Force via authFilePublishAccess
CVE-2026-73054 7.5 HIGH SiYuan before v3.7.4 Authentication Bypass via WebSocket
CVE-2026-73047 6.2 MEDIUM siyuan before v3.7.4 Server-Side Template Injection via attribute-view

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-73053

No comments yet

Leave a comment