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5.6 Moyenne

CVE-2026-34943 Wasmtime is a runtime for WebAssembly

Description

Wasmtime is a runtime for WebAssembly. Prior to 24.0.7, 36.0.7, 42.0.2, and 43.0.1, Wasmtime contains a possible panic which can happen when a flags-typed component model value is lifted with the Val type. If bits are set outside of the set of flags the component model specifies that these bits should be ignored but Wasmtime will panic when this value is lifted. This panic only affects wasmtime's implementation of lifting into Val, not when using the flags! macro. This additionally only affects flags-typed values which are part of a WIT interface. This has the risk of being a guest-controlled panic within the host which Wasmtime considers a DoS vector. This vulnerability is fixed in 24.0.7, 36.0.7, 42.0.2, and 43.0.1.

Produits et versions touchés

Produit Versions touchées Corrigé en
wasmtime 43.0 43.0.0 → < 44.0.1 44.0.1
wasmtime 37.0 37.0.0 → < 42.0.2 42.0.2
wasmtime 25.0 25.0.0 → < 36.0.7 36.0.7
wasmtime 24.0 premières → < 24.0.7 24.0.7

Références

Chronologie

  1. Publiée
  2. Dernière modification

Autres CVE de wasmtime

Les 81 CVE de wasmtime →
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