0-8664</a><br></td></tr><tr><td>CVSS Impact Score</td><td>7.5 <a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=&version=3.1"></a></td></tr><tr><td>Affected Releases</td><td>1.4 to 1.4.5<br></td></tr></tbody></table><p>Envoy, and subsequently Istio are vulnerable to four newly discovered vulnerabilities:</p><ul><li><p><strong><a href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8659">CVE-2020-8659</a></strong>: The Envoy proxy may consume excessive memory when proxying HTTP/1.