---
id: CVE-2026-94373
title: >-
  MISP contains a DOM-based cross-site scripting (XSS) vulnerability in the
  contextual menu JavaScript component
summary: >-
  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. Be…
severity: medium
cvss: 6.3
cvssVector: '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'
cwe:
  - CWE-79
vendor: MISP
product: MISP
affected:
  - MISP < 2.5.47
published: '2026-09-21'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T16:17:30.017'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-94373'
references:
  - url: 'https://github.com/MISP/MISP/commit/b062698f2'
    label: 5a6e4751-2f3f-4070-9419-94fb35b644e8
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-21T15:22:19.064596Z'
cvssSource: cna
ingestedAt: '2026-09-21T12:36:35.290Z'
epss: 0.0039
epssPercentile: 0.3034
---

## Overview

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

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.