---
id: CVE-2026-54786
aliases:
  - RUSTSEC-2026-0182
  - GHSA-3p27-qvp9-27qf
title: Leak in WASIp1 `fd_renumber` implementation
summary: Leak in WASIp1 `fd_renumber` implementation
severity: low
vendor: wasmtime-wasi
product: wasmtime-wasi
ecosystem: rust
affected:
  - 'wasmtime-wasi >= 45.0.0, < 45.0.2'
patched:
  - wasmtime-wasi 45.0.2
published: '2026-06-15'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T18:00:08.333260838Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/RUSTSEC-2026-0182'
references:
  - url: 'https://crates.io/crates/wasmtime-wasi'
  - url: 'https://rustsec.org/advisories/RUSTSEC-2026-0182.html'
  - url: 'https://github.com/bytecodealliance/wasmtime/pull/13650'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54786.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-54786'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2496195'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-54786'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54786'
  - url: >-
      https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-3p27-qvp9-27qf
tags:
  - osv
  - rust
  - csaf
  - vex
  - red-hat
epss: 0.00367
epssPercentile: 0.30402
cwe:
  - CWE-772
ingestedAt: '2026-07-09T18:56:37.355Z'
---

## Overview

This is an entry in the RustSec database for the Wasmtime security advisory
located at
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-3p27-qvp9-27qf
For more information see the GitHub-hosted security advisory.

## Affected packages

- `wasmtime-wasi >= 45.0.0, < 45.0.2`

## Remediation

Upgrade to a patched release:

- `wasmtime-wasi 45.0.2`

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Connectivity Link 1, Red Hat Enterprise Linux 10 · no fix planned: Red Hat Connectivity Link 1, Red Hat Enterprise Linux 10 · updated 2026-10-02 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54786.json)