Description
Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a denial of service vulnerability where dropping the Future returned by TypedFunc::call_async can panic the host. When the guest task has not started, cleanup code searches only one location for work items and unwraps the resulting error, crashing embedders that cancel pending calls.
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
2026-10-29T16:18:07.817Z
14 hours agoLast modified
2026-10-29T21:17:18.197Z
9 hours ago