Description


Wasmtime from 49.0.0 before 49.0.3 contains a denial-of-service vulnerability that allows a WebAssembly guest to trigger a host panic by transcoding overlapping strings in fused adapters. Attackers can make a same-instance component-to-component call transferring a string whose source and destination alias each other, crashing the host instead of raising a trap.

Related CPE's


Could not find any relations

Weaknesses



CWE-617

CVSS impact metrics


CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

4.8 · Medium

Information


Source identifier

[email protected]

Vulnerability status

Deferred

Published

2026-10-29T16:18:06.260Z

14 hours ago

Last modified

2026-10-29T16:18:06.380Z

14 hours ago