{"id":"CVE-2021-39162","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-39162","generatedAt":"2026-10-27T20:53:56.683Z","title":"0.15.1 contains an upgraded envoy binary with this vulnerability patched.","description":"Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, can abnormally terminate if an H/2 GOAWAY and SETTINGS frame are received in the same IO event. This can lead to a DoS in the presence of untrusted *upstream* servers. 0.15.1 contains an upgraded envoy binary with this vulnerability patched. If only trusted upstreams are configured, there is not substantial risk of this condition being triggered.","published":"2021-09-09T22:15:09.000Z","lastModified":"2026-06-17T04:03:13.000Z","status":"Modified","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":8.6,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H"},"cwe":["CWE-754"],"affected":["envoyproxy/envoy","pomerium/pomerium"],"epss":{"score":0.01638,"percentile":0.76175,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-j374-mjrw-vvp8","tags":["Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/pomerium/pomerium/security/advisories/GHSA-gjcg-vrxg-xmgv","tags":["Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ","tags":["Not Applicable","Third Party Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-j374-mjrw-vvp8","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/pomerium/pomerium/security/advisories/GHSA-gjcg-vrxg-xmgv","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ","tags":["Not Applicable","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-39162","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}