---
id: CVE-2026-54619
aliases:
  - GHSA-28hh-pr2h-2w89
title: >-
  sqlite3-ruby has Use-After-Free When Redefining SQLite Functions with
  Different Arity
summary: >-
  sqlite3-ruby has Use-After-Free When Redefining SQLite Functions with
  Different Arity
severity: low
cwe:
  - CWE-416
vendor: sqlite3-ruby
product: sqlite3-ruby
ecosystem: rubygems
affected:
  - sqlite3-ruby <= 2.9.4
  - sqlite3 <= 2.9.4
patched:
  - sqlite3-ruby 2.9.5
  - sqlite3 2.9.5
published: '2026-07-28'
updated: '2026-07-28'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-28hh-pr2h-2w89'
references:
  - url: >-
      https://github.com/sparklemotion/sqlite3-ruby/security/advisories/GHSA-28hh-pr2h-2w89
  - url: 'https://github.com/sparklemotion/sqlite3-ruby/pull/710'
  - url: >-
      https://github.com/sparklemotion/sqlite3-ruby/commit/2bd436d17f77cdd4c31b00fe9d50b0d21cbaf033
  - url: >-
      https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sqlite3/CVE-2026-54619.yml
  - url: 'https://github.com/sparklemotion/sqlite3-ruby/releases/tag/v2.9.5'
  - url: 'https://www.cve.org/CVERecord/SearchResults?query=CVE-2026-54619'
  - url: 'https://github.com/advisories/GHSA-28hh-pr2h-2w89'
tags:
  - ghsa
  - rubygems
ingestedAt: '2026-07-28T16:37:04.457Z'
epss: 0.00142
epssPercentile: 0.02843
---

## Overview

## Summary

Using `Database#create_function` or `Database#define_function` to define the same function name more than once with different numbers of arguments ("arity") or text encodings will result in a invalid memory read and a segmentation fault.

## Mitigation

Upgrade to sqlite3 gem v2.9.5 or later.

As a workaround, avoid defining multiple custom functions with the same name (varying numbers of arguments or encoding).

## Severity

The sqlite3-ruby maintainers assess this as Low severity. It is reliably triggered after GC when code is structured in a particular way. There is no known general exploit that could be used as a denial of service attack.

## Affected packages

- `sqlite3-ruby <= 2.9.4`
- `sqlite3 <= 2.9.4`

## Remediation

Upgrade to a patched release:

- `sqlite3-ruby 2.9.5`
- `sqlite3 2.9.5`