---
id: RUSTSEC-2026-0314
aliases:
  - GHSA-j2g9-4prp-pf6h
title: Guest can panic host through filesystem datetime overflow
summary: Guest can panic host through filesystem datetime overflow
severity: medium
cvss: 6.2
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: wasmtime-wasi
product: wasmtime-wasi
ecosystem: rust
affected:
  - 'wasmtime-wasi >= 49.0.0, < 49.0.1'
patched:
  - wasmtime-wasi 49.0.1
published: '2026-09-24'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T07:45:02.389850090Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/RUSTSEC-2026-0314'
references:
  - url: 'https://crates.io/crates/wasmtime-wasi'
  - url: 'https://rustsec.org/advisories/RUSTSEC-2026-0314.html'
  - url: 'https://github.com/bytecodealliance/wasmtime/pull/14403'
tags:
  - osv
  - rust
ingestedAt: '2026-09-30T07:22:02.091Z'
---

## Overview

This is an entry in the RustSec database for the Wasmtime security advisory
located at
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-j2g9-4prp-pf6h
For more information see the GitHub-hosted security advisory.

## Affected packages

- `wasmtime-wasi >= 49.0.0, < 49.0.1`

## Remediation

Upgrade to a patched release:

- `wasmtime-wasi 49.0.1`