CVE-2026-77761 Cross-Document Parser State Contamination in misp-stix

A parser state isolation vulnerability in misp-stix could cause data from a previously processed STIX document to be retained and incorporated into the MISP event generated from a subsequent document when the same parser instance is reused. Several STIX 1 and STIX 2 parser components maintained...

CVE-2026-77755

misp-stix is a Python library used by MISP for importing STIX 1 and STIX 2 documents. Two distinct flaws allow denial-of-service: (1) the import code used sys.exit() for parsing failures, which raises SystemExit (a BaseException subclass) that bypasses standard exception handlers, causing uncontr...

CVE-2026-77710: Improper Input Validation

A vulnerability in misp-stix could allow a crafted STIX document to influence security-sensitive MISP attribute metadata during import. The STIX import logic automatically selected between the internal MISP parser and the external STIX parser based on metadata contained in the STIX document itsel...