Please report a vulnerability privately: Security → Report a vulnerability on this repository (GitHub's private vulnerability reporting), not as a public issue. You get an answer within a few days, and a fix goes out as a beta first, then in the next stable release.
Supported: the latest stable release and the current beta.
What VisionState relies on, so you know what counts as a vulnerability: it is only reachable through Home Assistant Ingress (other requests are refused); camera credentials are never written to logs, errors or exports; nothing is sent anywhere but to your own Home Assistant and MQTT broker.