RUSTSEC-2026-0378

vendorUSosv

Panic lowering a host-created component model stream into a guest that expects a different payload type

view advisory published 2026-10-19Licence: CC0-1.0

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-9pvw-hwfg-92h5 For more information see the GitHub-hosted security advisory.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-115892US	—	0.43% (38th)	—	2026-10-23
Wasmtime is a runtime for WebAssembly. From 46.0.0 until 48.0.7 and 49.0.4, lowering a host-created component-model stream or future into a guest can omit a required payload-type c…

references

External citations — patches, advisories, analysis.

https://crates.io/crates/wasmtimePACKAGE
https://github.com/bytecodealliance/wasmtime/pull/14827WEB
https://rustsec.org/advisories/RUSTSEC-2026-0378.htmlADVISORY

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