Uncaught Exception Affecting wasmtime package, versions <24.0.7>=25.0.0 <36.0.7>=37.0.0 <42.0.2>=43.0.0 <43.0.1
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Test your applications- Snyk IDSNYK-RUST-WASMTIME-15967289
- published10 Apr 2026
- disclosed9 Apr 2026
- creditUnknown
Introduced: 9 Apr 2026
NewCVE-2026-34943 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade wasmtime to version 24.0.7, 36.0.7, 42.0.2, 43.0.1 or higher.
Overview
Affected versions of this package are vulnerable to Uncaught Exception through the processing of a flags-typed component model value containing unexpected bit settings. An attacker can cause the host system to become unresponsive by submitting specially crafted input.