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...

PT-2026-89408

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 sharing group id. The instantiation path passed that value into event creation without verifying that the user...

CVE-2022-50675

The CVE concerns Linux kernel arm64 MTE tagging. Before commit 69e3b846d8a7, mte_sync_tags() would run for pages that looked untagged but could set PG_mte_tagged via test_and_set_bit on such pages, potentially tagging swap/migration pages and propagating tags during copy/migration. The issue was ...