{"id":"CVE-2026-119132","published":"2026-10-29T16:18:06.260","lastModified":"2026-10-29T16:18:06.380","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.","cvssScore":4.8,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:H","cwes":["CWE-617"],"vendors":[],"products":[],"references":[{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-54p9-vhhq-8f7q","tags":[]},{"url":"https://www.vulncheck.com/advisories/wasmtime-49.0.0-before-49.0.3-host-panic-via-overlapping-string-transcode-in-fused-adapter","tags":[]}],"exploitRefs":[{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-54p9-vhhq-8f7q","tags":[]}],"hasPoc":true,"ai":null}