ProcessWire CMS 3.0.246 allows a low-privileged user with lang-edit to upload a crafted ZIP to Language Support that is auto-extracted without limits prior to validation, enabling resource-exhaustion Denial of Service.
ProcessWire v3.0.200 was discovered to contain multiple cross-site scripting (XSS) vulnerabilities via the Search Users and Search Pages function. These vulnerabilities allow attackers to execute arbitrary web scripts or HTML via injection of a crafted payload.