octobercms in a CMS platform based on the Laravel PHP Framework. In affected versions of the october/system package an attacker can request an account password reset and then gain access to the account using a specially crafted request. The issue has been patched in Build 472 and v1.1.5.
https://github.com/octobercms/october/security/advisories/GHSA-mxr5-mc97-63rc
https://github.com/octobercms/library/commit/5bd1a28140b825baebe6becd4f7562299d3de3b9
https://github.com/octobercms/library/commit/016a297b1bec55d2e53bc889458ed2cb5c3e9374