---
id: RUSTSEC-2026-0422
aliases:
  - GHSA-3982-jqvv-277m
title: >-
  Typed functions with `i31` or `nullref` arguments may panic due to
  insufficient type-check
summary: >-
  Typed functions with `i31` or `nullref` arguments may panic due to
  insufficient type-check
severity: low
cvss: 1.8
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L'
vendor: wasmtime
product: wasmtime
ecosystem: rust
affected:
  - 'wasmtime >= 50.0.0, < 50.0.1'
patched:
  - wasmtime 50.0.1
published: '2026-10-29'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T10:45:03.669147671Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/RUSTSEC-2026-0422'
references:
  - url: 'https://crates.io/crates/wasmtime'
  - url: 'https://rustsec.org/advisories/RUSTSEC-2026-0422.html'
  - url: 'https://github.com/bytecodealliance/wasmtime/pull/15076'
tags:
  - osv
  - rust
ingestedAt: '2026-10-30T19:05:36.530Z'
---

## Overview

This is an entry in the RustSec database for the Wasmtime security advisory
located at
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-3982-jqvv-277m
For more information see the GitHub-hosted security advisory.

## Affected packages

- `wasmtime >= 50.0.0, < 50.0.1`

## Remediation

Upgrade to a patched release:

- `wasmtime 50.0.1`