CVE-2026-54397 MISP event editing allows unauthorized assignment to undisclosed sharing groups

A vulnerability in MISP’s non-REST event editing path allowed an authenticated user with event edit permissions to manipulate the submitted form data and set an event’s sharinggroupid to a sharing group they were not authorized to use. When distribution was set to sharing group distribution, the...

CVE-2026-54397

MISP CVE-2026-54397 affects the non-REST event editing path. An authenticated user with event edit permissions could tamper with submitted form data to assign an event to a sharing_group_id the user is not authorized to use when distribution is set to sharing group distribution. The non-REST save...

CVE-2026-54397: Incorrect Authorization

A vulnerability in MISP’s non-REST event editing path allowed an authenticated user with event edit permissions to manipulate the submitted form data and set an event’s sharinggroupid to a sharing group they were not authorized to use. When distribution was set to sharing group distribution, the...

PT-2026-48999

Name of the Vulnerable Software and Affected Versions MISP affected versions not specified Description An issue in the non-REST event editing path allows an authenticated user with event edit permissions to manipulate submitted form data. By tampering with the event edit request, a user can set t...