Is wasmtime affected by CVE-2026-34941?

crates.io wasmtime is affected in =25.0.0 =37.0.0 =43.0.0 <43.0.1.

Is CVE-2026-34941 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

medium

CVE-2026-34941

Q: Is CVE-2026-34941 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

crates.io · wasmtime

Summary

Wasmtime: Heap OOB read in component model UTF-16 to latin1+utf16 string transcoding

Severity: medium
EPSS: 0.4% (p29)
Also known as: GHSA-hx6p-xpx3-jvvv, RUSTSEC-2026-0093
Published: 2026-04-09

References

Related advisories

CVE-2026-34987 — critical · crates.io/wasmtime
CVE-2026-34971 — critical · crates.io/wasmtime
CVE-2023-26489 — critical · crates.io/wasmtime
CVE-2022-39393 — high · crates.io/wasmtime
CVE-2022-24791 — high · crates.io/wasmtime
CVE-2026-44216 — medium · crates.io/wasmtime
CVE-2026-35186 — medium · crates.io/wasmtime
CVE-2026-35195 — medium · crates.io/wasmtime

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.