Vulnerability Database · crates.io · wasmtime · Version

wasmtime 39.0.1

39.0.1 is affected by 3 vulnerabilities.

The vulnerabilities that cover this exact version are listed below with the fixed version to move to.

Critical 1 High 0 Medium 2 Low 0 Unrated 0

All wasmtime versions & vulnerabilities → Source repository Search the database for this package →

Released 24 Nov 2025 Licence Apache-2.0 WITH LLVM-exception Also known from other sources 48 Newer releases 234 Database updated 23/Oct/2026

Release and licence data published by crates.io. Licence information is not legal advice.

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01 Vulnerabilities affecting this version

wasmtime 39.0.1 vulnerabilities

3 vulnerabilities cover wasmtime 39.0.1. Open the full list in the database.

Vulnerability	Severity	Fixed version	Disclosed
Buffer Overflow Vulnerability in Wasmtime Package: Async-Lifted Callback Result Count Unvalidated	9.3 critical	48.0.4	02 Oct 2026
CVE-2026-27195: Wasmtime Panic on Dropping Async Futures	6.9 medium	40.0.4	24 Feb 2026
CVE-2026-27195: wasmtime Panic on Dropping [Typed]Func::call_async Future	6.9 medium	40.0.4	24 Feb 2026

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Questions

About wasmtime 39.0.1

Is wasmtime 39.0.1 vulnerable?

Yes. 3 vulnerabilities in the Vulert database cover wasmtime 39.0.1: 1 critical, 0 high, 2 medium and 0 low. Each entry above names the fixed version to move to.

Is 39.0.1 the latest release of wasmtime?

No. 39.0.1 was published 24 Nov 2025, and newer releases exist. Newer is not automatically safer — the version table on the package page shows what each release carries.

How do I monitor wasmtime for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the wasmtime version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.