---
id: RUSTSEC-2026-0420
aliases:
  - GHSA-hmmr-87qq-258j
title: >-
  wasip3 UDP `send` can deliver a datagram to an address only allowed for
  receiving
summary: >-
  wasip3 UDP `send` can deliver a datagram to an address only allowed for
  receiving
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
vendor: wasmtime-wasi
product: wasmtime-wasi
ecosystem: rust
affected:
  - 'wasmtime-wasi >= 50.0.0, < 50.0.1'
patched:
  - wasmtime-wasi 50.0.1
published: '2026-10-29'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T10:45:03.672782746Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/RUSTSEC-2026-0420'
references:
  - url: 'https://crates.io/crates/wasmtime-wasi'
  - url: 'https://rustsec.org/advisories/RUSTSEC-2026-0420.html'
  - url: 'https://github.com/bytecodealliance/wasmtime/pull/15077'
tags:
  - osv
  - rust
ingestedAt: '2026-10-30T19:05:36.525Z'
---

## Overview

This is an entry in the RustSec database for the Wasmtime security advisory
located at
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hmmr-87qq-258j
For more information see the GitHub-hosted security advisory.

## Affected packages

- `wasmtime-wasi >= 50.0.0, < 50.0.1`

## Remediation

Upgrade to a patched release:

- `wasmtime-wasi 50.0.1`