Vulnerability Database · crates.io · wasmtime · Version
wasmtime 40.0.3
40.0.3 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
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Released 27 Jan 2026
Licence Apache-2.0 WITH LLVM-exception
Also known from other sources 46
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 40.0.3 vulnerabilities
3 vulnerabilities cover wasmtime 40.0.3. 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 40.0.3
Is wasmtime 40.0.3 vulnerable?
Yes. 3 vulnerabilities in the Vulert database cover wasmtime 40.0.3: 1 critical, 0 high, 2 medium and 0 low. Each entry above names the fixed version to move to.
Is 40.0.3 the latest release of wasmtime?
No. 40.0.3 was published 27 Jan 2026, 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.