Deep SSL/TLS Vulnerability Test
This report provides a deep analysis of the SSL/TLS configuration of www.lean-labs.com. It checks for protocol support, cipher strength, and known vulnerabilities.
Scan Results
Testing all IP addresses (port 443): 199.60.103.2 199.60.103.254 ----------------------------------------------------- Start 2026-03-28 21:39:24 -->> 199.60.103.2:443 (www.lean-labs.com) <<-- Further IP addresses: 199.60.103.254 2606:2c40::c73c:6702 2606:2c40::c73c:67fe rDNS (199.60.103.2): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "https://www.leanlabs.com/" HTTP clock skew 0 sec from localtime IPv4 address in header Set-Cookie: __cf_bm=bORN_xiuzjBEjjFs0nIxGEKZ0wtxYekoL805UoUEKSw-1774733995-1.0.1.1-3EkRyHEnRULo91Wd6JyKIdXLbqe.gTiWtcsqvnN0iv3zmrYE7WSsQ.MWMtanX5DVApjqYPyg2mUR4ozdU6aa7DDOmWS9aeDW_UNXK1EakYY; path=/; expires=Sat, 28-Mar-26 22:09:55 GMT; domain=.www.lean-labs.com; HttpOnly; Secure; SameSite=None (check if it's your IP address or e.g. a cluster IP) Set-Cookie: _cfuvid=Ox2Wbn4VQo7Ty5xz2sqIipkm2ix2D8PTx1PGaK3qDJA-1774733995157-0.0.1.1-604800000; path=/; domain=.www.lean-labs.com; HttpOnly; Secure; SameSite=None Strict Transport Security 365 days=31536000 s, just this domain Public Key Pinning -- Server banner cloudflare Application banner -- Cookie(s) 2 issued: 2/2 secure, 2/2 HttpOnly -- maybe better try target URL of 30x Security headers Content-Security-Policy: upgrade-insecure-requests Cache-Control: s-maxage=3600,max-age=120 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) no gzip/deflate/compress/br HTTP compression (OK) - only supplied "/" tested 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=599E40E014A90175BC07D33C1DE1C2D1A0F1C1C73BFF35B5995220F4378D78D7 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 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 2026-03-28 21:40:13 [ 58s] -->> 199.60.103.2:443 (www.lean-labs.com) <<-- ----------------------------------------------------- Start 2026-03-28 21:40:13 -->> 199.60.103.254:443 (www.lean-labs.com) <<-- Further IP addresses: 199.60.103.2 2606:2c40::c73c:6702 2606:2c40::c73c:67fe rDNS (199.60.103.254): -- Service detected: HTTP Testing for server implementation bugs No bugs found. Testing HTTP header response @ "/" HTTP Status Code 301 Moved Permanently, redirecting to "https://www.leanlabs.com/" HTTP clock skew 0 sec from localtime IPv4 address in header Set-Cookie: __cf_bm=6EEhg6ZKNqzfJqSi1w1V4grko0UyAQwSwt.PuxA3Ulg-1774734039-1.0.1.1-1J2D0A7iLx7rcMeKfz8J4F3v.lkmj3Pe4QLzJiIuWBS9c_CFtFdP2HrQQz.6e53D5OdVKbTimbJ7P_0i2Kmn1UJaaNF7s3EItAZYpnRWHJc; path=/; expires=Sat, 28-Mar-26 22:10:39 GMT; domain=.www.lean-labs.com; HttpOnly; Secure; SameSite=None (check if it's your IP address or e.g. a cluster IP) Set-Cookie: _cfuvid=brZYenCQEKDePYK4TQFPK8jkZwqL4GzWr6mC1EUKEXE-1774734039358-0.0.1.1-604800000; path=/; domain=.www.lean-labs.com; HttpOnly; Secure; SameSite=None Strict Transport Security 365 days=31536000 s, just this domain Public Key Pinning -- Server banner cloudflare Application banner -- Cookie(s) 2 issued: 2/2 secure, 2/2 HttpOnly -- maybe better try target URL of 30x Security headers Content-Security-Policy: upgrade-insecure-requests Cache-Control: s-maxage=3600,max-age=120 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) no gzip/deflate/compress/br HTTP compression (OK) - only supplied "/" tested 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=599E40E014A90175BC07D33C1DE1C2D1A0F1C1C73BFF35B5995220F4378D78D7 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 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 2026-03-28 21:40:58 [ 104s] -->> 199.60.103.254:443 (www.lean-labs.com) <<-- ----------------------------------------------------- Done testing now all IP addresses (on port 443): 199.60.103.2 199.60.103.254
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.