CVE (Common Vulnerabilities and Exposures) is a standardized naming scheme for cybersecurity vulnerabilities. It is maintained by the MITRE Corporation, a non-profit organization that aims to improve the cybersecurity of the United States. A CVE identifier is a unique alphanumeric string that is assigned to a specific vulnerability. The identifier is used to help identify and track the vulnerability, and to provide a common reference for information about the vulnerability.

PVE (PyUp Vulnerabilities and Exposures) is a term used by PyUp to refer to vulnerabilities that we have independently discovered in Python packages. PVEs are similar to CVEs in that they are used to identify and track specific vulnerabilities, but they are not part of the standardized naming scheme used by the MITRE Corporation.