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MISP ID Translator: Unescaped Remote Event ID Enables Cross-Site Scripting via Linked Server

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-104901

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-104901

MISP

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "cpes": [
      "cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:*"
    ],
    "repo": "https://github.com/MISP/MISP",
    "vendor": "MISP",
    "modules": [
      "ServersController (idTranslator)",
      "View/Servers/id_translator.ctp",
      "View/Themed/Overmind/Servers/id_translator.ctp"
    ],
    "product": "MISP",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "2.5.48",
        "versionType": "semver"
      }
    ],
    "programFiles": [
      "app/Controller/ServersController.php",
      "app/View/Servers/id_translator.ctp",
      "app/View/Themed/Overmind/Servers/id_translator.ctp"
    ]
  }
]
Related CVEs
CVE-2026-104901

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#8024 · Revision 1
Added to Heist Feed
Publisher date
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