If a server sends two Strict-Transport-Security (STS) headers for a single connection, they will be rejected as invalid and HTTP Strict Transport Security (HSTS) will not be enabled for the connection. This vulnerability affects Firefox < 55.
[ { "events": [ { "introduced": "0" }, { "fixed": "55.0" } ] } ]
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-7789.json"