Vulnerability in Musicplayerdaemon Mpd
CVE-2026-49127
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002
Affected products
- Musicplayerdaemon Mpd — versions 0
Weakness classification (CWE)
References
- www.musicpd.org/news/2026/05/mpd-0-24-11-released/ (release-notes, patch)
- raw.githubusercontent.com/MusicPlayerDaemon/MPD/v0.24.11/NEWS (release-notes)
- github.com/MusicPlayerDaemon/MPD/releases/tag/v0.24.11 (release-notes)
- github.com/MusicPlayerDaemon/MPD/issues/2485 (issue-tracking)
- github.com/MusicPlayerDaemon/MPD/commit/59911028c020f84bc2e669da6a1ef88121301274 (patch)
- www.vulncheck.com/advisories/music-player-daemon-stack-buffer-overflow-via-pcm-… (third-party-advisory)
- mstreet97.github.io/security-research/opensource/vulnerability-disclosure/cyber… (technical-description, exploit)
Frequently asked questions
- What is CVE-2026-49127?
- CVE-2026-49127 is a high-severity vulnerability in Musicplayerdaemon Mpd, classified under Off-by-one Error. CVSS score: 8.6/10. Published 2026-05-28.
- How severe is CVE-2026-49127?
- High severity. CVSS v3 base score is 8.6 out of 10.