{"cve":"CVE-2020-8660","nvd":{"published":"2020-03-04T22:15:11.343","modified":"2026-06-17T03:26:43.493","status":"Modified","description":"CNCF Envoy through 1.13.0 TLS inspector bypass. TLS inspector could have been bypassed (not recognized as a TLS client) by a client using only TLS 1.3. Because TLS extensions (SNI, ALPN) were not inspected, those connections might have been matched to a wrong filter chain, possibly bypassing some security restrictions in the process.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3},"cwes":["CWE-345"],"references":["https://access.redhat.com/errata/RHSA-2020:0734","https://github.com/envoyproxy/envoy/security/advisories/GHSA-c4g8-7grc-5wvx","https://www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history","https://access.redhat.com/errata/RHSA-2020:0734","https://github.com/envoyproxy/envoy/security/advisories/GHSA-c4g8-7grc-5wvx"],"products":["envoyproxy:envoy"],"source":"nvd","synced_at":"2026-10-19T21:02:53.949909883+00:00"},"epss":{"cve":"CVE-2020-8660","score":0.00606,"percentile":0.49008,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}