Description
Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability that allows malicious components to panic the host via thread.yield in start functions. Attackers can supply a component whose start function calls an async-lowered import then thread.yield, causing an undisposed fiber drop that crashes embedders.
Related CPE's
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References
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
Vulnerability status
Deferred
Published
2026-10-29T16:18:07.520Z
14 hours agoLast modified
2026-10-29T16:18:07.630Z
14 hours ago