CVSSv2
Common Vulnerability Scoring System v2.0

CVSSv3
Common Vulnerability Scoring System v3.0

CVSSv31
Common Vulnerability Scoring System v3.1

CVSSv4
Common Vulnerability Scoring System v4.0

OWASP
OWASP Risk Rating Methodology

SSVC
Stakeholder Specific Vulnerability Categorization

other
Another severity or risk scoring methodology
