IS YOU R VULNERABILITY FIXED?

As the post you linked to states:

The vulnerability, which does not yet have a CVE number, affects GDPR Cookie Consent version 1.8.2 and below. […] The new version, 1.8.3, was released by Cookie Law Info, the developer behind the plugin, on Feb. 10.

1.8.3 is indeed the current available version, and that includes the security fix: https://wordpress.org/plugins/cookie-law-info/#developers

In the future, we ask that you please observe the proper procedure for reporting or inquiring about a plugin security vulnerability: https://developer.wordpress.org/plugins/wordpress-org/plugin-security/reporting-plugin-security-issues/