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CVE-2026-104906

MISP TAXII Object Viewer Stored XSS via Unescaped JSON Output

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 2.5.48
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

MISP contains a cross-site scripting (XSS) vulnerability in the TAXII object viewer. When displaying a remote TAXII object, the JSON content of string properties was rendered directly into an HTML pre block without HTML-encoding. An attacker who can control or influence the content of a TAXII object (e.g., by publishing a malicious object to a TAXII server that the victim's MISP instance subscribes to) can inject arbitrary HTML or JavaScript that executes in the context of the victim's MISP session. Preconditions: • The victim must be an authenticated MISP user with access to the TAXII object viewer. • The victim must open or view the crafted TAXII object. Impact: • Execution of arbitrary JavaScript in the victim's browser within the MISP application context. • Potential theft of session tokens, API keys, or other sensitive data accessible from the MISP interface. • Potential for performing actions on behalf of the authenticated user. Affected versions: <2.5.48.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • MISP MISP

    fixed in 2.5.48

References 1

GitHub · MISP/MISP