---
id: CVE-2026-104901
title: >-
  MISP contains a cross-site scripting (XSS) vulnerability in the ID Translator
  feature
summary: >-
  MISP contains a cross-site scripting (XSS) vulnerability in the ID Translator
  feature. When a user views the ID Translator page, the application queries
  linked (remote) MISP servers for corresponding event identifiers. The event ID
  retur…
severity: medium
cvss: 5.1
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'
cwe:
  - CWE-79
vendor: MISP
product: MISP
affected:
  - MISP < 2.5.48
published: '2026-10-02'
updated: '2026-10-02'
sourceUpdated: '2026-10-02T17:17:04.413'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104901'
references:
  - url: 'https://github.com/MISP/MISP/commit/bd5e80c84'
    label: 5a6e4751-2f3f-4070-9419-94fb35b644e8
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-02T16:15:35.943839Z'
cvssSource: cna
ingestedAt: '2026-10-02T16:22:59.528Z'
---

## Overview

MISP contains a cross-site scripting (XSS) vulnerability in the ID Translator feature. When a user views the ID Translator page, the application queries linked (remote) MISP servers for corresponding event identifiers. The event ID returned by the remote server was rendered in the HTML output without proper output encoding.

A malicious or compromised linked server could return a crafted event ID containing arbitrary HTML or JavaScript markup. This markup would be rendered in the browser of any user in the host organization who views the ID Translator page, enabling session hijacking, credential theft, or other client-side attacks.

Preconditions:

- The victim must be an authenticated user of the host MISP instance.

- A linked server must be configured on the host instance.

- The victim must navigate to the ID Translator page for a given event.

Affected versions: <2.5.48.

## Remediation

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