@SheriffOfGrace Hello! This website only seems to check what version of Chromium the browser is running (hence, erroneously saying you are on Opera 134), and only lists the vulnerabilities that are published with each Chromium version - it doesn't actually check if the vulnerabilities are active.
As we have mentioned before, Opera takes in Chromium versions more slowly to ensure that compatibility with our own features and functions isn't compromised. However, we backport all security and vulnerability fixes to our own versions so that users' security isn't compromised either.
As an example, the Chromium Checker website indicates that Opera still has the CVE-2025-5419 vulnerability. In fact, this zero-day vulnerability was addressed last week, as detailed here.
We hope this helps!