PostHog-js is a library to interface with the PostHog analytics tool. Versions prior to 1.57.2 have the potential for cross-site scripting. Problem has been patched in 1.57.2. Users are advised to upgrade. Users unable to upgrade should ensure that their Content Security Policy is in place.
https://github.com/PostHog/posthog-js/security/advisories/GHSA-8775-5hwv-wr6v
https://github.com/PostHog/posthog-js/commit/67e07eb8bb271a3a6f4aa251382e4d25abb385a0