CVE-2026-77755 Denial of Service in MISP-STIX Import via Malformed or Oversized STIX Documents in misp-stix library

A denial-of-service vulnerability was identified in misp-stix when processing attacker-controlled STIX 1 or STIX 2 documents. The STIX import code used sys.exit to handle several parsing and loading failures. Because SystemExit inherits from BaseException rather than Exception, these failures...