---
id: RUSTSEC-2026-0364
aliases:
  - GHSA-p79w-pv2r-29qp
title: Exception tags can cause host data structures to be unaligned
summary: Exception tags can cause host data structures to be unaligned
severity: none
vendor: wasmtime
product: wasmtime
ecosystem: rust
affected:
  - 'wasmtime >= 49.0.0, < 49.0.3'
patched:
  - wasmtime 49.0.3
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T20:30:03.597701258Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/RUSTSEC-2026-0364'
references:
  - url: 'https://crates.io/crates/wasmtime'
  - url: 'https://rustsec.org/advisories/RUSTSEC-2026-0364.html'
  - url: 'https://github.com/bytecodealliance/wasmtime/pull/14731'
tags:
  - osv
  - rust
ingestedAt: '2026-10-15T11:47:08.236Z'
---

## Overview

This is an entry in the RustSec database for the Wasmtime security advisory
located at
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-p79w-pv2r-29qp
For more information see the GitHub-hosted security advisory.

## Affected packages

- `wasmtime >= 49.0.0, < 49.0.3`

## Remediation

Upgrade to a patched release:

- `wasmtime 49.0.3`