Improper Input Validation Affecting wasmtime package, versions >=39.0.0 <48.0.4>=49.0.0 <49.0.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published25 Oct 2026
- disclosed22 Oct 2026
- creditUnknown
Introduced: 22 Oct 2026
NewCVE-2026-115384 (opens in a new tab)How to fix?
Upgrade wasmtime to version 48.0.4, 49.0.2 or higher.
Overview
Affected versions of this package are vulnerable to Improper Input Validation via unvalidated async callback result types. An attacker can overwrite return addresses and potentially crash the host or escape the sandbox by supplying components with mistyped component-model-async callback functions.