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...