CVE-2018-5179

CVE-2018-5179 describes a high-severity vulnerability in Mozilla Firefox, affecting all versions prior to Firefox 60, where a service worker could perpetually run by repeatedly sending itself an activate event, enabling continuous user activity monitoring. This vulnerability has a CVSS score of 7.5 (High) due to its network-based attack vector, low attack complexity, and high confidentiality impact, allowing unauthorized information disclosure. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.