Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of webflow-files-prod.global.ssl.fastly.net. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 151.101.65.194 151.101.1.194 151.101.129.194 151.101.193.194 ----------------------------------------------------- Start 2026-10-09 22:12:18 -->> 151.101.65.194:443 (webflow-files-prod.global.ssl.fastly.net) <<-- Further IP addresses: 151.101.193.194 151.101.1.194 151.101.129.194 rDNS (151.101.65.194): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 403 Forbidden HTTP clock skew 0 sec from localtime Strict Transport Security not offered Public Key Pinning -- Server banner AmazonS3 Application banner -- Cookie(s) (none issued at "/") -- HTTP status 403 signals you maybe missed the web application Security headers Access-Control-Allow-Origin: * X-Served-By: cache-chi-klot8100096-CHI Reverse Proxy banner Via: 1.1 varnish X-Cache: MISS X-Cache-Hits: 0 Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) CRIME, TLS (CVE-2012-4929) not vulnerable (OK) BREACH (CVE-2013-3587) no gzip/deflate/compress/br HTTP compression (OK) - only supplied "/" tested POODLE, SSL (CVE-2014-3566) not vulnerable (OK) TLS_FALLBACK_SCSV (RFC 7507) Downgrade attack prevention supported (OK) SWEET32 (CVE-2016-2183, CVE-2016-6329) VULNERABLE, uses 64 bit block ciphers FREAK (CVE-2015-0204) not vulnerable (OK) DROWN (CVE-2016-0800, CVE-2016-0703) not vulnerable on this host and port (OK) make sure you don't use this certificate elsewhere with SSLv2 enabled services, see https://search.censys.io/search?resource=hosts&virtual_hosts=INCLUDE&q=7910C7C866F38FFC5FE0904282D75EB8637EB6198B12E9EB68416830A7954BFF LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) TLS1: ECDHE-RSA-AES128-SHA ECDHE-RSA-AES256-SHA AES128-SHA AES256-SHA DES-CBC3-SHA VULNERABLE -- but also supports higher protocols TLSv1.1 TLSv1.2 (likely mitigated) LUCKY13 (CVE-2013-0169), experimental potentially VULNERABLE, uses obsolete cipher block chaining ciphers with TLS, see server prefs. Winshock (CVE-2014-6321), experimental not vulnerable (OK) - CAMELLIA or ECDHE_RSA GCM ciphers found RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-10-09 22:13:02 [ 54s] -->> 151.101.65.194:443 (webflow-files-prod.global.ssl.fastly.net) <<-- ----------------------------------------------------- Start 2026-10-09 22:13:03 -->> 151.101.1.194:443 (webflow-files-prod.global.ssl.fastly.net) <<-- Further IP addresses: 151.101.193.194 151.101.65.194 151.101.129.194 rDNS (151.101.1.194): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 403 Forbidden HTTP clock skew 0 sec from localtime Strict Transport Security not offered Public Key Pinning -- Server banner AmazonS3 Application banner -- Cookie(s) (none issued at "/") -- HTTP status 403 signals you maybe missed the web application Security headers Access-Control-Allow-Origin: * X-Served-By: cache-chi-kigq8000034-CHI Reverse Proxy banner Via: 1.1 varnish X-Cache: MISS X-Cache-Hits: 0 Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) CRIME, TLS (CVE-2012-4929) not vulnerable (OK) BREACH (CVE-2013-3587) no gzip/deflate/compress/br HTTP compression (OK) - only supplied "/" tested POODLE, SSL (CVE-2014-3566) not vulnerable (OK) TLS_FALLBACK_SCSV (RFC 7507) Downgrade attack prevention supported (OK) SWEET32 (CVE-2016-2183, CVE-2016-6329) VULNERABLE, uses 64 bit block ciphers FREAK (CVE-2015-0204) not vulnerable (OK) DROWN (CVE-2016-0800, CVE-2016-0703) not vulnerable on this host and port (OK) make sure you don't use this certificate elsewhere with SSLv2 enabled services, see https://search.censys.io/search?resource=hosts&virtual_hosts=INCLUDE&q=7910C7C866F38FFC5FE0904282D75EB8637EB6198B12E9EB68416830A7954BFF LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) TLS1: ECDHE-RSA-AES128-SHA ECDHE-RSA-AES256-SHA AES128-SHA AES256-SHA DES-CBC3-SHA VULNERABLE -- but also supports higher protocols TLSv1.1 TLSv1.2 (likely mitigated) LUCKY13 (CVE-2013-0169), experimental potentially VULNERABLE, uses obsolete cipher block chaining ciphers with TLS, see server prefs. Winshock (CVE-2014-6321), experimental not vulnerable (OK) - CAMELLIA or ECDHE_RSA GCM ciphers found RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-10-09 22:13:49 [ 101s] -->> 151.101.1.194:443 (webflow-files-prod.global.ssl.fastly.net) <<-- ----------------------------------------------------- Start 2026-10-09 22:13:49 -->> 151.101.129.194:443 (webflow-files-prod.global.ssl.fastly.net) <<-- Further IP addresses: 151.101.193.194 151.101.65.194 151.101.1.194 rDNS (151.101.129.194): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 403 Forbidden HTTP clock skew 0 sec from localtime Strict Transport Security not offered Public Key Pinning -- Server banner AmazonS3 Application banner -- Cookie(s) (none issued at "/") -- HTTP status 403 signals you maybe missed the web application Security headers Access-Control-Allow-Origin: * X-Served-By: cache-chi-klot8100116-CHI Reverse Proxy banner Via: 1.1 varnish X-Cache: MISS X-Cache-Hits: 0 Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) CRIME, TLS (CVE-2012-4929) not vulnerable (OK) BREACH (CVE-2013-3587) no gzip/deflate/compress/br HTTP compression (OK) - only supplied "/" tested POODLE, SSL (CVE-2014-3566) not vulnerable (OK) TLS_FALLBACK_SCSV (RFC 7507) Downgrade attack prevention supported (OK) SWEET32 (CVE-2016-2183, CVE-2016-6329) VULNERABLE, uses 64 bit block ciphers FREAK (CVE-2015-0204) not vulnerable (OK) DROWN (CVE-2016-0800, CVE-2016-0703) not vulnerable on this host and port (OK) make sure you don't use this certificate elsewhere with SSLv2 enabled services, see https://search.censys.io/search?resource=hosts&virtual_hosts=INCLUDE&q=7910C7C866F38FFC5FE0904282D75EB8637EB6198B12E9EB68416830A7954BFF LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) TLS1: ECDHE-RSA-AES128-SHA ECDHE-RSA-AES256-SHA AES128-SHA AES256-SHA DES-CBC3-SHA VULNERABLE -- but also supports higher protocols TLSv1.1 TLSv1.2 (likely mitigated) LUCKY13 (CVE-2013-0169), experimental potentially VULNERABLE, uses obsolete cipher block chaining ciphers with TLS, see server prefs. Winshock (CVE-2014-6321), experimental not vulnerable (OK) - CAMELLIA or ECDHE_RSA GCM ciphers found RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-10-09 22:14:40 [ 152s] -->> 151.101.129.194:443 (webflow-files-prod.global.ssl.fastly.net) <<-- ----------------------------------------------------- Start 2026-10-09 22:14:40 -->> 151.101.193.194:443 (webflow-files-prod.global.ssl.fastly.net) <<-- Further IP addresses: 151.101.65.194 151.101.1.194 151.101.129.194 rDNS (151.101.193.194): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 403 Forbidden HTTP clock skew 0 sec from localtime Strict Transport Security not offered Public Key Pinning -- Server banner AmazonS3 Application banner -- Cookie(s) (none issued at "/") -- HTTP status 403 signals you maybe missed the web application Security headers Access-Control-Allow-Origin: * X-Served-By: cache-chi-klot8100161-CHI Reverse Proxy banner Via: 1.1 varnish X-Cache: MISS X-Cache-Hits: 0 Testing vulnerabilities Secure Renegotiation (RFC 5746) supported (OK) Secure Client-Initiated Renegotiation not vulnerable (OK) CRIME, TLS (CVE-2012-4929) not vulnerable (OK) BREACH (CVE-2013-3587) no gzip/deflate/compress/br HTTP compression (OK) - only supplied "/" tested POODLE, SSL (CVE-2014-3566) not vulnerable (OK) TLS_FALLBACK_SCSV (RFC 7507) Downgrade attack prevention supported (OK) SWEET32 (CVE-2016-2183, CVE-2016-6329) VULNERABLE, uses 64 bit block ciphers FREAK (CVE-2015-0204) not vulnerable (OK) DROWN (CVE-2016-0800, CVE-2016-0703) not vulnerable on this host and port (OK) make sure you don't use this certificate elsewhere with SSLv2 enabled services, see https://search.censys.io/search?resource=hosts&virtual_hosts=INCLUDE&q=7910C7C866F38FFC5FE0904282D75EB8637EB6198B12E9EB68416830A7954BFF LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) TLS1: ECDHE-RSA-AES128-SHA ECDHE-RSA-AES256-SHA AES128-SHA AES256-SHA DES-CBC3-SHA VULNERABLE -- but also supports higher protocols TLSv1.1 TLSv1.2 (likely mitigated) LUCKY13 (CVE-2013-0169), experimental potentially VULNERABLE, uses obsolete cipher block chaining ciphers with TLS, see server prefs. Winshock (CVE-2014-6321), experimental not vulnerable (OK) - CAMELLIA or ECDHE_RSA GCM ciphers found RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-10-09 22:15:50 [ 222s] -->> 151.101.193.194:443 (webflow-files-prod.global.ssl.fastly.net) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 151.101.65.194 151.101.1.194 151.101.129.194 151.101.193.194
About this Scan
This scan uses testssl.sh to check for:
- Protocols: SSLv2, SSLv3, TLS 1.0, TLS 1.1, TLS 1.2, TLS 1.3
- Vulnerabilities: Heartbleed, POODLE, FREAK, Logjam, DROWN, etc.
- Cipher Suites: Weak ciphers, perfect forward secrecy (PFS) support.