---
id: CVE-2024-30266
aliases:
  - PYSEC-2024-327
  - GHSA-75hq-h6g9-h4q5
  - RUSTSEC-2024-0441
title: >-
  wasmtime is a runtime for WebAssembly. The 19.0.0 release of Wasmtime contains
  a regression introduced during its development which can l…
summary: >-
  wasmtime is a runtime for WebAssembly. The 19.0.0 release of Wasmtime contains
  a regression introduced during its development which can lead to a guest
  WebAssembly module causing a panic in the host runtime. A valid WebAssembly
  module, w…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
vendor: wasmtime
product: wasmtime
ecosystem: pip
affected:
  - wasmtime <= 19.0.0
published: '2024-04-04'
updated: '2026-07-13'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/PYSEC-2024-327'
references:
  - url: >-
      https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-75hq-h6g9-h4q5
  - url: 'https://github.com/bytecodealliance/wasmtime/issues/8281'
  - url: >-
      https://github.com/bytecodealliance/wasmtime/commit/7f57d0bb0948fa56cc950278d0db230ed10e8664
  - url: 'https://github.com/bytecodealliance/wasmtime/pull/8018'
  - url: 'https://github.com/bytecodealliance/wasmtime/pull/8283'
tags:
  - osv
  - pip
epss: 0.0032
epssPercentile: 0.22304
ingestedAt: '2026-07-13T18:58:06.481Z'
---

## Overview

wasmtime is a runtime for WebAssembly. The 19.0.0 release of Wasmtime contains a regression introduced during its development which can lead to a guest WebAssembly module causing a panic in the host runtime. A valid WebAssembly module, when executed at runtime, may cause this panic. This vulnerability has been patched in version 19.0.1.

## Affected packages

- `wasmtime <= 19.0.0`

## Remediation

Refer to the advisory for the patched release.