><tr><td>CVE(s)</td><td><a href="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31921">CVE-2021-31921</a><br></td></tr><tr><td>CVSS Impact Score</td><td>10 <a href="https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV%3aN%2fAC%3aL%2fPR%3aN%2fUI%3aN%2fS%3aC%2fC%3aH%2fI%3aH%2fA%3aH&version=3.1">AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H</a></td></tr><tr><td>Affected Releases</td><td>All releases prior to 1.8.6<br>1.9.0 to 1.9.4<br></td></tr></tbody></table><h2 id=issue>Issue</h2><p>Istio contains 