Issues

• allow server to write application data after server finished

  aws/s2n-tls#6110 · Filter by author jmayclin opened on Sep 25, 2026

• s2n-tls-metrics: reports non-immutable security policy name (e.g., default_fips)

  priority/mediumsize/medium
  aws/s2n-tls#6101 · Filter by author Mark-Simulacrum opened on Sep 21, 2026

• s2n-tls is unnecessarily pessimistic with small record sizing

  priority/lowrecord-protocol-refactorsize/medium
  aws/s2n-tls#6059 · Filter by author jmayclin opened on Aug 20, 2026

• rust bindings: safe IO bindings

  priority/mediumsize/medium
  aws/s2n-tls#6018 · Filter by author jmayclin opened on Jul 31, 2026

• implement ratchet for outer protocol version

  priority/mediumrecord-protocol-refactorsize/small
  aws/s2n-tls#6001 · Filter by author jmayclin opened on Jul 21, 2026
  2

• s2n-tls-metrics-subscriber calls P-256 certificates compatible with CNSA1

  priority/mediumsize/small
  aws/s2n-tls#5982 · Filter by author Mark-Simulacrum opened on Jul 10, 2026

• original (first) client hello not available on HelloRetryRequest

  priority/lowsize/mediumtype/telemetry
  aws/s2n-tls#5961 · Filter by author Mark-Simulacrum opened on Jun 24, 2026
  2

  

• Two RFC compliance observations: record version not validated pre-negotiation, unknown ContentType silently discarded

  priority/lowsize/small
  aws/s2n-tls#5917 · Filter by author afldl opened on Jun 10, 2026
  1

  

• no API to surface buffered record fragments

  priority/mediumsize/large
  aws/s2n-tls#5863 · Filter by author jmayclin opened on May 6, 2026
  4

• Update Docker Image Go Compiler Version to 1.20+

  priority/medium
  aws/s2n-tls#5834 · Filter by author boquan-fang opened on Apr 16, 2026

• Expose unverified server certificate chains

  priority/highsize/medium
  aws/s2n-tls#5821 · Filter by author Mark-Simulacrum opened on Apr 8, 2026
  4

• Bump nix version after corretto25 is added into nixpkgs

  priority/mediumsize/smalltype/ci
  aws/s2n-tls#5806 · Filter by author CarolYeh910 opened on Mar 27, 2026

• negotiate_in_use reentrancy flag not cleared on early return error paths

  difficulty/expertpriority/mediumsize/medium
  aws/s2n-tls#5796 · Filter by author cpsource opened on Mar 21, 2026
  2

• OpenSSL Support Roadmap

  priority/tracking
  aws/s2n-tls#5783 · Filter by author jmayclin opened on Mar 12, 2026
  9

• Duplicate feature flags

  priority/mediumsize/small
  aws/s2n-tls#5762 · Filter by author maddeleine opened on Feb 26, 2026
  1

  

• loading large number of certificates is slow

  priority/lowsize/medium
  Bug

  aws/s2n-tls#5731 · Filter by author jmayclin opened on Feb 13, 2026
  5

• Reduce runtime of slowest unit tests

  priority/lowsize/mediumtype/optimizationtype/performancetype/test
  aws/s2n-tls#5704 · Filter by author alexw91 opened on Jan 15, 2026
  2

• Unit Tests for "dummy" EncryptedClientHello

  priority/lowsize/small
  aws/s2n-tls#5697 · Filter by author alexw91 opened on Jan 12, 2026
  3

• Clang 18 compilation errors with strict warning flags (-Werror enabled)

  good first issuepriority/mediumsize/medium
  aws/s2n-tls#5696 · Filter by author HyukjinKwon opened on Jan 9, 2026
  5

• Upgrade dependency after bumping MSRV beyond 1.86

  MSRVpriority/tracking
  aws/s2n-tls#5687 · Filter by author CarolYeh910 opened on Dec 23, 2025

• Fail PRs based on Rust test statistics

  priority/mediumsize/medium
  aws/s2n-tls#5678 · Filter by author maddeleine opened on Dec 16, 2025
  1

• ci: Consolidate kTLS jobs

  priority/lowsize/smalltype/ci
  aws/s2n-tls#5670 · Filter by author dougch opened on Dec 13, 2025
  

• invalid support group state: error classification

  priority/lowsize/small
  Bug

  aws/s2n-tls#5655 · Filter by author jmayclin opened on Dec 5, 2025
  5

• feature: configure client key shares

  priority/mediumsize/large
  Feature

  aws/s2n-tls#5629 · Filter by author jmayclin opened on Nov 20, 2025
  1

• Prevent TLS 1.2 Handshake Messages from Entering TLS 1.3 Post-Handshake Path

  priority/mediumsize/medium
  aws/s2n-tls#5624 · Filter by author kaukabrizvi opened on Nov 18, 2025
  1