Allocation of Resources Without Limits or Throttling Affecting rust-wasmtime package, versions *


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.15% (5th percentile)

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  • Snyk IDSNYK-DEBIAN13-RUSTWASMTIME-21664605
  • published24 Oct 2026
  • disclosed22 Oct 2026

Introduced: 22 Oct 2026

NewCVE-2026-115389  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

There is no fixed version for Debian:13 rust-wasmtime.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rust-wasmtime package and not the rust-wasmtime package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 does not adequately account for host allocations when lifting guest values through the dynamically-typed Val API, bypassing the hostcall fuel limit. A malicious WebAssembly guest can return crafted values that allocate at least ~100x more host memory than tracked, causing denial of service.

CVSS Base Scores

version 3.1