Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of www.perplexity.ai. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 104.18.26.48 104.18.27.48 ----------------------------------------------------- Start 2026-10-07 09:49:43 -->> 104.18.26.48:443 (www.perplexity.ai) <<-- Further IP addresses: 104.18.27.48 2606:4700::6812:1a30 2606:4700::6812:1b30 rDNS (104.18.26.48): -- 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=NUK0FOLlugJHY0ZWBy5vrjZ.8QuwT.NGd_n2wNlydwg-1791366604.545664-1.0.1.1-HKvhUVo5OsB4S8i4kXsNAz6mopXbPGdr6nGzqyrV.SP_45CUeCvCEdrxBqQq_vtF.Z3ouhU78m3nqjzwdKVYI0N4P6XdY34w.JHnDKiW7MD6PgTcFjU6sinW2hVKa01I; HttpOnly; SameSite=None; Secure; Path=/; Domain=perplexity.ai; Expires=Wed, 07 Oct 2026 10:20:04 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 403 signals you maybe missed the web application Security headers X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff Content-Security-Policy: default-src 'none'; script-src 'nonce-EW7Kd6bMtPAxL4mDeTKzhG' 'unsafe-eval' https://challenges.cloudflare.com; script-src-attr 'none'; style-src 'unsafe-inline'; img-src 'self' https://challenges.cloudflare.com; connect-src 'self' https://challenges.cloudflare.com; frame-src 'self' https://challenges.cloudflare.com blob:; child-src 'self' https://challenges.cloudflare.com blob:; worker-src blob:; form-action http: https:; base-uri 'self' 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 Cache-Control: no-cache, no-store 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) 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=10FDF0D15B9D0FA32C5042DCC4A797927740ADBFB27492EF78538B1D1B5CE669 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 09:50:21 [ 44s] -->> 104.18.26.48:443 (www.perplexity.ai) <<-- ----------------------------------------------------- Start 2026-10-07 09:50:22 -->> 104.18.27.48:443 (www.perplexity.ai) <<-- Further IP addresses: 104.18.26.48 2606:4700::6812:1a30 2606:4700::6812:1b30 rDNS (104.18.27.48): -- 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=iYHD0PBctyCO2Zwpw1R.wJzVolkw0dUXO2QzrhzSdms-1791366644.4455447-1.0.1.1-LNd7vKliF0ZOFFHdR3A04zR83zuftaNOH7oMMbNISVqmDvQrrPXCDsh0wtW7ZCbRjCePq74hOv5vIhIt1zr.arDwGy10hTzB_mECFgnZrXABFGOGe1LUFsy8_1gwgx7C; HttpOnly; SameSite=None; Secure; Path=/; Domain=perplexity.ai; Expires=Wed, 07 Oct 2026 10:20:44 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 403 signals you maybe missed the web application Security headers X-Frame-Options: SAMEORIGIN X-Content-Type-Options: nosniff Content-Security-Policy: default-src 'none'; script-src 'nonce-jY5UiAU1XKpIcJ5qLV9GaT' 'unsafe-eval' https://challenges.cloudflare.com; script-src-attr 'none'; style-src 'unsafe-inline'; img-src 'self' https://challenges.cloudflare.com; connect-src 'self' https://challenges.cloudflare.com; frame-src 'self' https://challenges.cloudflare.com blob:; child-src 'self' https://challenges.cloudflare.com blob:; worker-src blob:; form-action http: https:; base-uri 'self' 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 Cache-Control: no-cache, no-store 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) 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=10FDF0D15B9D0FA32C5042DCC4A797927740ADBFB27492EF78538B1D1B5CE669 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 09:51:03 [ 86s] -->> 104.18.27.48:443 (www.perplexity.ai) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 104.18.26.48 104.18.27.48
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.