CVE-2017-5389

CVE-2017-5389 describes a vulnerability in Mozilla Firefox versions prior to 51, where malicious WebExtensions could bypass Content Security Policy (CSP) headers. By manipulating CSP and redirecting script loads, an attacker could leverage the "mozAddonManager" API to install additional extensions without user consent. This medium-severity vulnerability has a CVSS score of 6.1, indicating a network-based attack requiring user interaction with low impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.