Issues

• PLAIN sends and expects a malformed ERROR command ("\x05ERROR" parses as "^RROR")

  zeromq/libzmq#4943 · Filter by author trevorbernard opened on Oct 17, 2026
  1

• PUB leaks incomplete multipart frames when a subscriber disconnects

  zeromq/libzmq#4940 · Filter by author DzemalMemic opened on Oct 13, 2026

• Allow to use post quantum safe encryption with CurveZMQ

  zeromq/libzmq#4933 · Filter by author t-b opened on Sep 18, 2026
  1

• sould curve_publickey be required on clients?

  zeromq/libzmq#4927 · Filter by author minrk opened on Aug 14, 2026

• Race condition in ctx_t::send_command() causes UAF during concurrent socket destruction

  zeromq/libzmq#4926 · Filter by author surprized opened on Aug 11, 2026

• Backpressure Propagation via zmq_proxy using ZMQ_XPUB_NODROP

  zeromq/libzmq#4921 · Filter by author rocha-devs opened on Jul 20, 2026

• one zmq.PUSH socket permanently blocks on send_pyobj() while other PUSH sockets to the same PULL continue working

  zeromq/libzmq#4917 · Filter by author 937869301 opened on Jul 15, 2026
  1

• Linux function detection can fail

  zeromq/libzmq#4907 · Filter by author KUGA2 opened on Jun 25, 2026
  1

• [Proposal] - Application scheduled I/O execution

  zeromq/libzmq#4903 · Filter by author avb-blizzard opened on Jun 13, 2026

• Timer sockets

  zeromq/libzmq#4854 · Filter by author cacharle opened on Apr 18, 2026

• ZAP does not receive ip address of the client

  zeromq/libzmq#4851 · Filter by author AntiTenzor opened on Apr 15, 2026
  1

• cmake 4.2.3 dropped support for cmake_minimum_required below 3.5

  zeromq/libzmq#4844 · Filter by author bgemmill opened on Feb 26, 2026
  3

• Race condition: assertion failure in stream_engine_base.cpp: out_event() when _io_error is set

  zeromq/libzmq#4841 · Filter by author p4l1ly opened on Feb 12, 2026
  1

• ZMQ fails with "Interrupted system call" when a signal is delivered to the process

  zeromq/libzmq#4837 · Filter by author yurivict opened on Jan 31, 2026
  1

• ZMQ_STREAM server cannot disconnect client when sndhwm reached

  zeromq/libzmq#4828 · Filter by author pijyoi opened on Jan 2, 2026
  1

• application Spyder launch produced may have errors

  zeromq/libzmq#4825 · Filter by author nmitch11 opened on Dec 1, 2025

• Assertion "dummy == 0" in signaler_t::recv_failable() during zmq_connect via azmq on Windows 11 with statically linked libzmq 4.3.5

  zeromq/libzmq#4824 · Filter by author ramsankar184 opened on Nov 18, 2025
  1

• Problem: ZMQ_MULTICAST_HOPS doesn't affect ZMQ_DGRAM sockets

  zeromq/libzmq#4821 · Filter by author khnsky opened on Oct 20, 2025

• ThreadSanitizer support for GCC

  zeromq/libzmq#4819 · Filter by author sochsenk opened on Sep 17, 2025

• Any plan to support RDMA?

  zeromq/libzmq#4817 · Filter by author yizhuoliang opened on Sep 15, 2025

• Macos crash when call send()

  zeromq/libzmq#4816 · Filter by author Program-JW opened on Sep 15, 2025

• Libzmq 4.3.5 configure options for building on AIX 7.3

  zeromq/libzmq#4815 · Filter by author AAB94 opened on Sep 14, 2025

• Subscriber messages leak when subscribing in one thread and publishing in another

  zeromq/libzmq#4811 · Filter by author mangodan2003 opened on Jul 30, 2025
  2

• issue building curve-keygen

  zeromq/libzmq#4808 · Filter by author diehard2 opened on Jul 19, 2025
  1

• alt_clock_gettime() does not check return value of host_get_clock_service() (macOS)

  zeromq/libzmq#4804 · Filter by author qingweizhang054 opened on Jul 5, 2025
  1