Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of chatgpt.com. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 104.18.32.47 172.64.155.209 ----------------------------------------------------- Start 2026-10-07 10:20:23 -->> 104.18.32.47:443 (chatgpt.com) <<-- Further IP addresses: 172.64.155.209 2a06:98c1:3101::6812:202f 2606:4700:4408::ac40:9bd1 rDNS (104.18.32.47): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 403 Forbidden HTTP clock skew -1 sec from localtime IPv4 address in header set-cookie: __cf_bm=3JSQlnAj0G7I87evZyyKbNch6585Eimy.AuG1KohDw4-1791368443.9541397-1.0.1.1-796vv6MPhkggK2c3ni6TvHtuivWTnu5fHgUS3RabDGf3qDNDEkfGLYvgWzPMqR3GiOO0Id29jolPAuhJCFYVMeva5QSrN36cOPYactZt6Qpg0rc4ye7FtTuqU2o_II4q; HttpOnly; SameSite=None; Secure; Path=/; Domain=chatgpt.com; Expires=Wed, 07 Oct 2026 10:50:43 GMT (check if it's your IP address or e.g. a cluster IP) Strict Transport Security 365 days=31536000 s, includeSubDomains, preload Public Key Pinning -- Server banner cloudflare Application banner -- Cookie(s) 1 issued: 1/1 secure, 1/1 HttpOnly -- HTTP status 403 signals you maybe missed the web application Security headers X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff Permissions-Policy: accelerometer=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=(),xr-spatial-tracking=* Cross-Origin-Opener-Policy: same-origin Cross-Origin-Resource-Policy: same-origin Cross-Origin-Embedder-Policy: require-corp Permissions-Policy: accelerometer=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=(),xr-spatial-tracking=* Referrer-Policy: same-origin Reverse Proxy banner -- 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) potentially NOT ok, "br gzip" HTTP compression detected. - only supplied "/" tested Can be ignored for static pages or if no secrets in the page POODLE, SSL (CVE-2014-3566) not vulnerable (OK) TLS_FALLBACK_SCSV (RFC 7507) No fallback possible (OK), no protocol below TLS 1.2 offered SWEET32 (CVE-2016-2183, CVE-2016-6329) not vulnerable (OK) 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=8972A544D60D31B7DDD74BB96C9CFF1935D1D889C1EE2BB6CBBCDB8880A81AAC LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) not vulnerable (OK), no SSL3 or TLS1 LUCKY13 (CVE-2013-0169), experimental not vulnerable (OK) Winshock (CVE-2014-6321), experimental not vulnerable (OK) RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-10-07 10:21:02 [ 46s] -->> 104.18.32.47:443 (chatgpt.com) <<-- ----------------------------------------------------- Start 2026-10-07 10:21:02 -->> 172.64.155.209:443 (chatgpt.com) <<-- Further IP addresses: 104.18.32.47 2a06:98c1:3101::6812:202f 2606:4700:4408::ac40:9bd1 rDNS (172.64.155.209): -- 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 IPv4 address in header set-cookie: __cf_bm=9TbREAdcmSuq20IuJa.SIo0roHeZHwjg2ezgU4_.47c-1791368484.3013082-1.0.1.1-Gvz7PU8MXFJ5mWU1lzvlUK3c0qtPbpRuI998dcwo.I_KZzW7qsqYAI0Kj2tgNhRuOTvE3VXyi7bYIG0C2BmsBQEbCqJkz9Svf6rYz6FLq_EF6vTg43GrKig2crvXIsY.; HttpOnly; SameSite=None; Secure; Path=/; Domain=chatgpt.com; Expires=Wed, 07 Oct 2026 10:51:24 GMT (check if it's your IP address or e.g. a cluster IP) Strict Transport Security 365 days=31536000 s, includeSubDomains, preload Public Key Pinning -- Server banner cloudflare Application banner -- Cookie(s) 1 issued: 1/1 secure, 1/1 HttpOnly -- HTTP status 403 signals you maybe missed the web application Security headers X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff Permissions-Policy: accelerometer=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=(),xr-spatial-tracking=* Cross-Origin-Opener-Policy: same-origin Cross-Origin-Resource-Policy: same-origin Cross-Origin-Embedder-Policy: require-corp Permissions-Policy: accelerometer=(),camera=(),clipboard-read=(),clipboard-write=(),geolocation=(),gyroscope=(),hid=(),magnetometer=(),microphone=(),payment=(),publickey-credentials-get=(),screen-wake-lock=(),serial=(),sync-xhr=(),usb=(),xr-spatial-tracking=* Referrer-Policy: same-origin Reverse Proxy banner -- 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) potentially NOT ok, "br gzip" HTTP compression detected. - only supplied "/" tested Can be ignored for static pages or if no secrets in the page POODLE, SSL (CVE-2014-3566) not vulnerable (OK) TLS_FALLBACK_SCSV (RFC 7507) No fallback possible (OK), no protocol below TLS 1.2 offered SWEET32 (CVE-2016-2183, CVE-2016-6329) not vulnerable (OK) 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=8972A544D60D31B7DDD74BB96C9CFF1935D1D889C1EE2BB6CBBCDB8880A81AAC LOGJAM (CVE-2015-4000), experimental not vulnerable (OK): no DH EXPORT ciphers, no DH key detected with <= TLS 1.2 BEAST (CVE-2011-3389) not vulnerable (OK), no SSL3 or TLS1 LUCKY13 (CVE-2013-0169), experimental not vulnerable (OK) Winshock (CVE-2014-6321), experimental not vulnerable (OK) RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-10-07 10:21:43 [ 87s] -->> 172.64.155.209:443 (chatgpt.com) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 104.18.32.47 172.64.155.209
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.