Issues

• h3i panics when a HEADERS frame cannot be QPACK-decoded

  cloudflare/quiche#2847 · Filter by author RaphaelFakhri opened on Oct 24, 2026

• Small PING packets can be emitted without sufficient padding when cwnd is nearly full

  cloudflare/quiche#2835 · Filter by author 0xf836 opened on Oct 15, 2026

• Private security report awaiting review

  cloudflare/quiche#2829 · Filter by author wallace0409 opened on Oct 14, 2026

• h3: SETTINGS to_bytes(from_bytes(x)) can exceed MAX_SETTINGS_PAYLOAD_SIZE and fail to re-parse

  cloudflare/quiche#2819 · Filter by author ROY887 opened on Oct 10, 2026

• Receive-memory bounds for fragmented streams

  cloudflare/quiche#2814 · Filter by author wemeetagain opened on Oct 8, 2026

• stream: pending FIN can be stranded after DATA acknowledgement and retransmission

  cloudflare/quiche#2800 · Filter by author lixing-lx opened on Oct 5, 2026
  2

• Firefox/macOS downloads from Cloudflare edge drop from ~69 to ~3 Mbps over HTTP/3; client qlog findings

  cloudflare/quiche#2793 · Filter by author tamaina opened on Oct 4, 2026
  1

• Custom qlog filters

  cloudflare/quiche#2713 · Filter by author birneee opened on Sep 7, 2026

• Edge closes HTTP/3 connections at 10,000 requests with H3_NO_ERROR but no GOAWAY

  cloudflare/quiche#2700 · Filter by author th0mk opened on Sep 3, 2026

• BBRv2 connection can stay in PROBE_RTT indefinitely: exit condition is missing the minimum-window clause from the reference implementation

  cloudflare/quiche#2698 · Filter by author shanchen97 opened on Sep 1, 2026
  1

• Loss-time selection can discard an earlier deadline

  cloudflare/quiche#2694 · Filter by author LiD0209 opened on Aug 31, 2026

• quiche-client does not enforce server authentication with a custom CA

  cloudflare/quiche#2693 · Filter by author LiD0209 opened on Aug 31, 2026

• PADDING bytes are omitted from bytes_in_flight

  cloudflare/quiche#2692 · Filter by author LiD0209 opened on Aug 31, 2026

• Reno slow start grows cwnd by MSS instead of acknowledged bytes

  cloudflare/quiche#2691 · Filter by author LiD0209 opened on Aug 31, 2026

• Dropping Initial or Handshake state does not reset PTO backoff

  cloudflare/quiche#2690 · Filter by author LiD0209 opened on Aug 31, 2026

• Sender-induced packet number gaps reduce packet-threshold tolerance

  cloudflare/quiche#2689 · Filter by author LiD0209 opened on Aug 31, 2026

• Initial congestion window ignores the byte cap for larger MDS

  cloudflare/quiche#2688 · Filter by author LiD0209 opened on Aug 31, 2026

• 0-RTT rejection keeps recovery state

  cloudflare/quiche#2687 · Filter by author LiD0209 opened on Aug 31, 2026
  1

• Loss-time selection can discard an earlier deadline

  cloudflare/quiche#2686 · Filter by author LiD0209 opened on Aug 31, 2026

• PTO probes only the selected packet number space

  cloudflare/quiche#2685 · Filter by author LiD0209 opened on Aug 31, 2026

• Server keeps PTO timer armed at the anti-amplification limit

  cloudflare/quiche#2684 · Filter by author LiD0209 opened on Aug 31, 2026
  1

• Initial ACK resets PTO backoff before address validation

  cloudflare/quiche#2683 · Filter by author LiD0209 opened on Aug 31, 2026

• Legacy Reno/CUBIC do not enforce the initial-cwnd burst limit

  cloudflare/quiche#2682 · Filter by author LiD0209 opened on Aug 31, 2026

• Reno grows cwnd for an ACK-only packet acknowledgment

  cloudflare/quiche#2681 · Filter by author LiD0209 opened on Aug 31, 2026

• Persistent congestion is not implemented

  cloudflare/quiche#2680 · Filter by author LiD0209 opened on Aug 31, 2026