[ CVE-2026-119132 · Published 29 Oct 2026 ]
Vulnerability in bytecodealliance wasmtime
CVSS 4.8
EPSS <1%No fix listed yet
[ Description ]Official 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.
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.