MEDIUM 5.9 NVD
CVE-2026-119132
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
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.
References
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-54p9-vhhq-8f7q
- https://www.vulncheck.com/advisories/wasmtime-49.0.0-before-49.0.3-host-panic-via-overlapp
This medium severity vulnerability with a CVSS score of 5.9 was published on 2026-10-29 via NVD.
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