---
id: CVE-2026-116726
title: gbsplay through 0.0.103 Heap Out-of-Bounds Read via gbr_open GBR Title
summary: >-
  Gbsplay through 0.0.103 contains a heap out-of-bounds read vulnerability in
  gbr_open() in gbs.c that fails to verify file length before scanning the GBR
  ROM title field. Attackers can supply a crafted GBR file of 0x21 to 0x162
  bytes to r…
severity: low
cvss: 3.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'
cvssSource: cna
cwe:
  - CWE-125
vendor: mmitch
product: gbsplay
affected:
  - gbsplay <= 0.0.103
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-27T13:41:56.170379Z'
published: '2026-10-26'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T14:17:32.379Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-116726'
references:
  - url: 'https://github.com/mmitch/gbsplay/issues/201'
    label: 'GitHub Issue #201'
  - url: 'https://github.com/mmitch/gbsplay'
  - url: >-
      https://github.com/mmitch/gbsplay/commit/33812ed38d84b800b5a17f639ef6625f76290785
  - url: 'https://github.com/mmitch/gbsplay/blob/0.0.103/gbs.c#L810-L820'
  - url: 'https://hackmd.io/@haindpwn/gbsplay-rom-bank-index-oob-read'
  - url: >-
      https://www.vulncheck.com/advisories/gbsplay-through-0.0.103-heap-out-of-bounds-read-via-gbr-open-gbr-title
    label: >-
      VulnCheck Advisory: gbsplay through 0.0.103 Heap Out-of-Bounds Read via
      gbr_open GBR Title
tags:
  - cve.org
epss: 0.00127
epssPercentile: 0.02338
ingestedAt: '2026-10-27T16:11:59.455Z'
---

## Overview

Gbsplay through 0.0.103 contains a heap out-of-bounds read vulnerability in gbr_open() in gbs.c that fails to verify file length before scanning the GBR ROM title field. Attackers can supply a crafted GBR file of 0x21 to 0x162 bytes to read past the heap buffer, crashing gbsplay or leaking memory.

## Affected

- `gbsplay <= 0.0.103`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.