CVE-2026-56423

MISP has fixed multiple vulnerabilities in the MISP platform. The vulnerabilities include manipulating client-supplied primary and foreign keys by authenticated users, leading to unauthorized data overwriting, ownership transfer, and modification of record scopes. Furthermore, there was inadequate access control during bulk deletion of Event Reports and Sharing Groups, allowing users with broad role rights to delete items from other organizations. There were also multiple access control issues that allowed unauthorized changes or deletions across organizational boundaries. Additionally, the platform contained a vulnerability where authenticated site administrators could set the NDJSON error log path to a web-accessible PHP file, leading to remote code execution via injected PHP code in log files. Furthermore, authenticated administrators could specify arbitrary Kafka configuration files, enabling arbitrary code execution by loading malicious libraries. These vulnerabilities have been mitigated by implementing server-side validation, strict authorization controls, restrictions on log path configurations, and enforcing allowed locations for configuration files.

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