CVE-2026-119132

MediumCVSS 4.8/10Last modified Nov 3, 2026

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.

Metrics

CVSS 3.1 4.8/10CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-617

Affected software

VendorProductVersions
bytecodealliancewasmtime>= 49.0.0, < 49.0.3

References

Timeline

Published
Oct 29, 2026
Last modified
Nov 3, 2026
NVD status
Deferred

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CVE-2026-119132: Medium severity, CVSS 4.8 | Vulnix