CVE-2026-49127 Music Player Daemon < 0.24.11 Stack Buffer Overflow via pcm_unpack_24be
Unauthenticated attackers can trigger a stack buffer overflow in MPD via malicious HTTP audio sources, potentially leading to code execution or service termination.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-49127?
CVE-2026-49127 is a high-severity memory corruption vulnerability in MusicPlayerDaemon MPD, published on 28 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Music Player Daemon (MPD) before version 0.24.11 contains a stack buffer overflow vulnerability in the pcm_unpack_24be function in src/pcm/Pack.cxx that allows unauthenticated attackers to corrupt stack memory by triggering an off-by-one write in the PCM decoder plugin. Attackers can issue two MPD commands referencing a malicious HTTP audio source to cause the unpack loop to write 1366 entries into a 1365-entry buffer, overwriting four bytes past the array boundary with three attacker-controlled bytes from an HTTP response body, resulting in daemon termination or potential code execution.
Weakness: CWE-193
Which versions are affected by CVE-2026-49127?
How do I fix CVE-2026-49127?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-49127 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49127 exists.
Sources
Also known as DEBIAN-CVE-2026-49127, GHSA-p9r5-qpp4-rjg3, UBUNTU-CVE-2026-49127.