The OpenMPT/libopenmpt project released the latest stable libopenmpt version:

libopenmpt 0.4.5 (2019-05-27)

  • [Sec] Possible crash during playback due out-of-bounds read in XM and MT2 files (r11608).

  • Breaking out of a sustain loop through Note-Off sometimes didn’t continue in the regular sample loop.
  • Seeking did not stop notes playing with XM Key Off (Kxx) effect.

The changelog for older versions can be found at https://lib.openmpt.org/doc/changelog.html .

Source code download links:

Documentation and binary downloads can be found at the libopenmpt website at https://lib.openmpt.org/libopenmpt/.


The security issue fixed in libopenmpt 0.4 does not affect the earlier libopenmpt 0.3 and 0.2 branches. Thus, the libopenmpt 0.3.15, libopenmpt 0.2.11253-beta37, libopenmpt 0.2.7561-beta20.5 and libopenmpt 0.2.7386-beta20.3 lines require no update.


The following libopenmpt versions are currently supported with security fixes by the OpenMPT/libopenmpt project:

  • 0.4.5
    • Current stable version.
    • Receives security updates.
    • Receives minor playback fixes.
  • 0.3.16
    • Old stable version.
    • Receives security updates.
    • Receives trivial bug fixes.
  • 0.2.11539-beta38
    • Old stable version.
    • Receives security updates.
    • Receives trivial bug fixes.
  • 0.2.7561-beta20.5-p13
    • Older stable version which is supported on Unix-like systems only.
    • Receives only security fixes.
  • 0.2.7386-beta20.3-p16
    • Older stable version which is supported on Unix-like systems only.
    • Receives only security fixes.
  • 0.5 (SVN trunk)
    • development
    • security updates
    • playback fixes
    • new features
    • new file formats

Please update to the newest versions.