CVE-2026-88915

Affected versions of MISP do not consistently enforce the acting user's authorization when instantiating event templates. For templates using distribution = 4, the template can specify a sharinggroupid. The instantiation path passed that value into event creation without verifying that the user...

CVE-2026-88915

MISP ≤2.5.45 is affected by an authorization bypass in the event template instantiation path. When a template uses distribution = 4 , the template's sharing_group_id was passed directly into event creation without verifying that the acting user is permitted to use that sharing group via SharingGr...

CVE-2026-88915 MISP Event Template Instantiation Bypasses Sharing Group and Tagging Authorization

Affected versions of MISP do not consistently enforce the acting user's authorization when instantiating event templates. For templates using distribution = 4, the template can specify a sharinggroupid. The instantiation path passed that value into event creation without verifying that the user...