---
id: CVE-2026-93296
title: >-
  MISP contains a stored cross-site scripting (XSS) vulnerability in the
  Overmind theme's statistics views
summary: >-
  MISP contains a stored cross-site scripting (XSS) vulnerability in the
  Overmind theme's statistics views. The event General card and the server/feed
  preview card constructed donut chart legend labels by directly concatenating
  object name…
severity: medium
cvss: 5.1
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-79
vendor: misp
product: misp
affected:
  - misp >= unspecified < 2.5.47
published: '2026-09-17'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T08:16:42.170'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93296'
references:
  - url: 'https://github.com/MISP/misp/commit/382188d2f'
    label: 5a6e4751-2f3f-4070-9419-94fb35b644e8
tags:
  - nvd
  - cve.org
epss: 0.00331
epssPercentile: 0.26435
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-17T18:06:22.658218Z'
cvssSource: cna
ingestedAt: '2026-09-17T17:23:30.683Z'
---

## Overview

MISP contains a stored cross-site scripting (XSS) vulnerability in the Overmind theme's statistics views. The event General card and the server/feed preview card constructed donut chart legend labels by directly concatenating object name or category keys into an innerHTML string without HTML-encoding. Because MISP object names are user-controllable by any authenticated user with sufficient permissions to create or modify such objects, an attacker could craft a name containing malicious markup. When any other user viewed the affected Overmind dashboard, the injected markup would be interpreted as live HTML/JavaScript in the victim's browser, executing in the context of the MISP application origin. This could allow session hijacking, data exfiltration, or arbitrary actions performed on behalf of the victim. 

The vulnerability requires the attacker to have low-level authenticated access to create or rename an object whose name is rendered in the legend, and the victim to view the Overmind event or server preview page. No special browser conditions or race conditions are required.

## Remediation

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