CVE WatchOct 2, 2026

CVE-2026-104906

MISP contains a cross-site scripting (XSS) vulnerability in the TAXII object viewer. When displaying a remote TAXII object, the JSON content

CVSS

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No CVSS

EPSS

0.4%

p28

KEV

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Exploit Today

0-100

Published: Oct 2, 2026 · Last modified: Oct 2, 2026 · CWE-79

EPSS · 30d

0.4%EPSS · 30 days0.4%

2026-10-032026-10-21

Technical description

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.

Official references

github.comhttps://github.com/MISP/MISP/commit/1bed4ca0c

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