Medium severity4.8NVD Advisory· Published Oct 22, 2026· Updated Oct 22, 2026

CVE-2026-115382

Description

Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a denial-of-service vulnerability in its wasi:http implementation that allows guests to panic the host. Guests can specify a zero between-bytes-timeout request option, which is forwarded directly to a Tokio API that panics, crashing the host embedding.

Affected products

Bytecodealliance/Wasmtimellm-fuzzy
Range: <48.0.4, <49.0.2

Patches

Vulnerability mechanics

References

github.com/bytecodealliance/wasmtime/security/advisories/GHSA-w4qr-p94g-mjhvnvd
www.vulncheck.com/advisories/wasmtime-46.0.0-before-48.0.4-and-49.0.0-before-49.0.2-wasi-http-zero-timeout-panic-dosnvd

News mentions

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cvss	0.312
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000