---
id: "CVE-2026-116727"
kind: "vulnerability"
aliases: ["CVE-2026-116727"]
title: "gbsplay: crafted VGM file reads past heap buffer and crashes player"
severity: "medium"
cvss: 4.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["audio-tools", "gbsplay", "linux", "package"]
not_affected_if: ["gbsplay-not-installed", "no-vgm-input"]
published_at: "2026-10-26T22:16:56+00:00"
first_seen_at: "2026-10-26T22:25:33+00:00"
updated_at: "2026-10-26T22:28:08+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116727", "first_seen_at": "2026-10-26T22:25:33+00:00"}]
---

# gbsplay: crafted VGM file reads past heap buffer and crashes player

gbsplay, a Game Boy sound player, has a heap out-of-bounds read in vgm_open() in gbs.c because it walks the VGM command stream without bounds checks. A crafted VGM file with wait opcodes and no 0x66 terminator makes the player read past its heap buffer and crash.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `gbsplay --version` and compare against the fixed release; the sources say the flaw affects versions through `0.0.103`
- unknown for whether any distribution package has shipped a patch

## Fix

- Upgrade gbsplay past `0.0.103` once a fixed release is available; unknown for the exact fixed version
- Until then, only open VGM files from trusted sources

## Timeline

- 2026-10-26T22:25:33+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-116727

## From the sources

gbsplay through 0.0.103 contains a heap out-of-bounds read vulnerability in vgm_open() in gbs.c that walks the VGM command stream without bounds checks. Attackers can supply a crafted VGM file with wait opcodes and no 0x66 terminator to read past the heap buffer and crash the player.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_