Issues

• SSLyze crashes when scanning chinese websites

  bug
  nabla-c0d3/sslyze#732 · Filter by author nabla-c0d3 opened on Oct 4, 2026

• sslyze cant scan websites with http3 (UDP,TLS 1.3) only

  nabla-c0d3/sslyze#731 · Filter by author Nurmagoz opened on Sep 13, 2026

• [Feature request] Add Shor/Grover reporting

  nabla-c0d3/sslyze#727 · Filter by author migueldilaj opened on Aug 6, 2026

• cryptography restricted to <47

  nabla-c0d3/sslyze#726 · Filter by author paulschreiber opened on Aug 4, 2026

• Switch from Mozilla to TLSRef for server TLS configuration profiles

  nabla-c0d3/sslyze#725 · Filter by author nabla-c0d3 opened on Jul 28, 2026

• Windows executable crashes when Mozilla compliance output contains non-cp1252 certificate text

  bug
  nabla-c0d3/sslyze#724 · Filter by author noneymous opened on Jul 27, 2026

• TLSv1.2 only Supported groups are tested with TLSv1.3 only supported version

  fix ready
  nabla-c0d3/sslyze#722 · Filter by author bwbroersma opened on Jun 23, 2026
  2

• Send proper SMTP QUIT after the connection completes

  nabla-c0d3/sslyze#720 · Filter by author mxsasha opened on May 7, 2026
  1

• Check for ECH (Encrypted Client Hello) Support

  fix readynew-check
  nabla-c0d3/sslyze#719 · Filter by author nabla-c0d3 opened on May 2, 2026
  1

• Reducing TLS connection count in cipher suite scan

  nabla-c0d3/sslyze#718 · Filter by author mxsasha opened on Apr 30, 2026
  2

• nassl error fetching certificate

  nabla-c0d3/sslyze#717 · Filter by author sgros opened on Apr 22, 2026

• Some ARIA Ciphers are not Supported

  nabla-c0d3/sslyze#713 · Filter by author FWieshaider opened on Jan 26, 2026

• Add support to discover X25519MLKEM768

  fix readynew-check
  nabla-c0d3/sslyze#700 · Filter by author JaimeGomezGarcia opened on Jul 24, 2025
  2

• Check for the signature algorithms supported by the server

  new-check
  nabla-c0d3/sslyze#685 · Filter by author nabla-c0d3 opened on Dec 27, 2024
  1

• "CryptographyDeprecationWarning: Parsed a negative serial number, which is disallowed by RFC 5280"

  blocked
  nabla-c0d3/sslyze#656 · Filter by author thbar opened on Jul 13, 2024
  5

• Memory Leak still seems to be present when running in Python

  nabla-c0d3/sslyze#603 · Filter by author lcurtis-datto opened on May 31, 2023
  2

• Integrate badkeys to check public keys from TLS certificates

  nabla-c0d3/sslyze#567 · Filter by author nabla-c0d3 opened on May 14, 2022

• Implement GitHub Action on marketplace for running SSLyze from CI/CD

  nabla-c0d3/sslyze#539 · Filter by author nabla-c0d3 opened on Nov 26, 2021

• ROBOT false negative

  need more info
  nabla-c0d3/sslyze#504 · Filter by author weddige opened on Mar 4, 2021
  5

• "Not a valid TlsHandshakeTypeByte" when running --heartbleed

  bugneed more info
  nabla-c0d3/sslyze#497 · Filter by author wondex opened on Feb 12, 2021
  9

• Add logic for checking for Encrypted SNI support

  new-check
  nabla-c0d3/sslyze#452 · Filter by author nabla-c0d3 opened on Aug 10, 2020

• Add support for revocation checking via OCSP

  enhancement
  nabla-c0d3/sslyze#446 · Filter by author nabla-c0d3 opened on Jun 14, 2020
  5

• Add support for scanning DTLS servers

  complexenhancement
  nabla-c0d3/sslyze#387 · Filter by author fbexiga opened on Aug 29, 2019
  3

• Full Server Ciphersuite Order Preference Detection

  wontfix
  nabla-c0d3/sslyze#338 · Filter by author faldridge opened on Sep 25, 2018
  5

• Add check for ALPN

  new-check
  nabla-c0d3/sslyze#327 · Filter by author ericrange opened on Aug 13, 2018
  2