Uncaught Exception Affecting wasmcloud package, versions <2.10.3-r3


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.43% (38th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-WASMCLOUD-22100476
  • published31 Oct 2026
  • disclosed23 Oct 2026

Introduced: 23 Oct 2026

NewCVE-2026-115892  (opens in a new tab)
CWE-248  (opens in a new tab)
CWE-843  (opens in a new tab)

How to fix?

Upgrade Chainguard wasmcloud to version 2.10.3-r3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream wasmcloud package and not the wasmcloud package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Wasmtime is a runtime for WebAssembly. From 46.0.0 until 48.0.7 and 49.0.4, lowering a host-created component-model stream or future into a guest can omit a required payload-type check after the value passes through guest code and returns through StreamAny, FutureAny, Val::Stream, Val::Future, or an equivalent typed reader. A malicious guest that controls exported function types or returned values can cause the host to pass the type-erased value to a guest expecting a different payload type, which panics the Wasmtime host. This issue is fixed in versions 48.0.7 and 49.0.4.

CVSS Base Scores

version 3.1