CVE-2026-119135 — Vulnerability intelligence
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Published:
- CVSS
- 5.9
- CISA KEV
- Not listed; not proof of no exploitation
Original source text (not a translation)
Wasmtime 46.0.0 before 48.0.6 and 49.0.0 before 49.0.3 panics when the host reads a component model stream as a different Rust item type than it was created with, because the host-to-host read path asserts matching TypeIds instead of returning an error. Guest code can return a host-created StreamReader<U> that the embedder reads as StreamReader<T>, where both types map to the same component model type, crashing the embedding process.