CVE-2026-94373— MISP DOM-based Cross-Site Scripting via innerHTML in Contextual Menu
Quick assessment
Affected
MISP MISP
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.
MISP contains a DOM-based cross-site scripting (XSS) vulnerability in the contextual menu JavaScript component. The ContextualMenu class populates HTML <option> elements by assigning user-controllable values to the innerHTML property. Because innerHTML parses
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I. Basic Information for CVE-2026-94373
Vulnerability Information
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Vulnerability Title
MISP DOM-based Cross-Site Scripting via innerHTML in Contextual Menu
Source: CVE Program / CVE List V5
Vulnerability Description
MISP contains a DOM-based cross-site scripting (XSS) vulnerability in the contextual menu JavaScript component. The ContextualMenu class populates HTML <option> elements by assigning user-controllable values to the innerHTML property. Because innerHTML parses and renders HTML markup, any untrusted string supplied as the option text (value.text or value) is interpreted as live DOM content rather than plain text. An attacker who can influence the data rendered in the contextual menu can inject arbitrary HTML or JavaScript that executes in the victim's browser within the MISP application origin. This may allow session hijacking, data exfiltration, or unauthorized actions performed on behalf of the authenticated user.
Version affected: <2.5.47
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
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
Affected Products
II. Public POCs for CVE-2026-94373
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-94373 (1)
Same Patch Batch · MISP · 2026-09-21 · 11 CVEs total
| CVE-2026-94381 | 8.7 HIGH | MISP Privilege Escalation: Read-Only API Key User Can Regain Full Role via updateLoginTime |
| CVE-2026-94383 | 8.6 HIGH | MISP Blocklist Workflow Module: Arbitrary Script Execution via Unrestricted File Extension |
| CVE-2026-94401 | 8.3 HIGH | MISP Arbitrary Local File Read and SSRF via MISP Export Upload |
| CVE-2026-94374 | 8.3 HIGH | MISP: IDOR via Client-Supplied Report ID in Module Results Processing Allows Reparenting a |
| CVE-2026-94404 | 7.1 HIGH | MISP CSRF vulnerability allows unauthorized attribute modification |
| CVE-2026-94379 | 6.9 MEDIUM | MISP: HTTP Method Bypass of Login Security Controls (Bruteforce Protection and Email OTP) |
| CVE-2026-94393 | 6.4 MEDIUM | MISP Event Report Cross-Event Reparenting via Unscoped UUID Resolution in editReport |
| CVE-2026-94277 | 6.3 MEDIUM | Stored Cross-Site Scripting in MISP Galaxy Matrix Statistics via Unescaped Galaxy Name |
| CVE-2026-94372 | 6.3 MEDIUM | Stored Cross-Site Scripting via Unescaped Galaxy Cluster Tag Names in MISP Default Theme G |
| CVE-2026-94394 | 6.3 MEDIUM | MISP ObjectReferencesController: Granular Distribution and Sharing Group Restrictions Bypa |
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V. Comments for CVE-2026-94373
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