Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of r2cdn.perplexity.ai. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 104.18.27.48 104.18.26.48 ----------------------------------------------------- Start 2026-10-07 09:45:08 -->> 104.18.27.48:443 (r2cdn.perplexity.ai) <<-- Further IP addresses: 104.18.26.48 2606:4700::6812:1b30 2606:4700::6812:1a30 rDNS (104.18.27.48): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 404 Not Found (Hint: supply a path which doesn't give a "404 Not Found") HTTP clock skew 0 sec from localtime IPv4 address in header set-cookie: __cf_bm=lk5WcROwhbxgAFY.tUHKUN3yjlDrccNxQnY8mIJhYWk-1791366329.333878-1.0.1.1-5.LuNIul.aitztz1NsF0hocZM.T2WbuXUreFLF0Xd90IYC4udaCvmfk285cwlyUBewmAX4lqZg284h0f7nq36.89.Swtkf8BImWgtX4wcpMp81lh_g3Gz.Kw27p7NJmI; HttpOnly; SameSite=None; Secure; Path=/; Domain=perplexity.ai; Expires=Wed, 07 Oct 2026 10:15:29 GMT (check if it's your IP address or e.g. a cluster IP) Strict Transport Security 180 days=15552000 s, includeSubDomains, preload Public Key Pinning -- Server banner cloudflare Application banner -- Cookie(s) 1 issued: 1/1 secure, 1/1 HttpOnly -- HTTP status 404 signals you maybe missed the web application Security headers Access-Control-Allow-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, "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) 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=9B6845322B836F0F055768840C65156747BBDB172B62F21682B2B087E837426B 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 AES128-SHA ECDHE-RSA-AES256-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) RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-10-07 09:45:48 [ 46s] -->> 104.18.27.48:443 (r2cdn.perplexity.ai) <<-- ----------------------------------------------------- Start 2026-10-07 09:45:48 -->> 104.18.26.48:443 (r2cdn.perplexity.ai) <<-- Further IP addresses: 104.18.27.48 2606:4700::6812:1b30 2606:4700::6812:1a30 rDNS (104.18.26.48): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 404 Not Found (Hint: supply a path which doesn't give a "404 Not Found") HTTP clock skew 0 sec from localtime IPv4 address in header set-cookie: __cf_bm=wBj6H3ZeIALoY0OeBWu2n4UfVbCBelZt.KsRrmOX5BM-1791366372.516132-1.0.1.1-iCKfw.ZyneurYIaBbx3qHaW_cK1BW2C2vTEuQAoFeIBRFYRwZFFfg7zxPWGlWmwLU1tmi36878uiKdO1chVPeQh9DjNxbEKl_7F.Y_TFcwcNT4RIPXvpNRLdENx4D2z9; HttpOnly; SameSite=None; Secure; Path=/; Domain=perplexity.ai; Expires=Wed, 07 Oct 2026 10:16:12 GMT (check if it's your IP address or e.g. a cluster IP) Strict Transport Security 180 days=15552000 s, includeSubDomains, preload Public Key Pinning -- Server banner cloudflare Application banner -- Cookie(s) 1 issued: 1/1 secure, 1/1 HttpOnly -- HTTP status 404 signals you maybe missed the web application Security headers Access-Control-Allow-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, "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) 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=9B6845322B836F0F055768840C65156747BBDB172B62F21682B2B087E837426B 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 AES128-SHA ECDHE-RSA-AES256-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) RC4 (CVE-2013-2566, CVE-2015-2808) no RC4 ciphers detected (OK) Done 2026-10-07 09:46:31 [ 89s] -->> 104.18.26.48:443 (r2cdn.perplexity.ai) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 104.18.27.48 104.18.26.48
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.