CVE-2026-86440 MISP Dashboard Button Widget Allows Stored XSS via Unsafe javascript: and Backslash URLs

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

CVE-2026-86440 MISP Dashboard Button Widget Allows Stored XSS via Unsafe javascript: and Backslash URLs

Affected versions of MISP insufficiently validate URLs used by dashboard widgets, particularly the Button widget. The widget's URL is stored configuration controlled by a user. The previous renderer considered a URL safe if it appeared relative or if its parsed hostname matched the configured MIS...

CVE-2026-86440

MISP 's dashboard Button widget is affected by a stored XSS caused by insufficient URL validation. The prior renderer treated a URL as safe if it appeared relative or matched the configured MISP hostname, but failed to reject dangerous schemes such as javascript: or backslash-based authority form...

CVE-2026-10856: URL Redirection to Untrusted Site

A URL validation flaw in the MISP dashboard button widget allowed a crafted relative-looking URL to be accepted as a local path while being interpreted by browsers as an external URL. The validation rejected URLs containing an explicit scheme, host, or user component, but did not reject paths...