Medium severity5.3NVD Advisory· Published Oct 29, 2026· Updated Oct 29, 2026

CVE-2026-119137

Description

Wasmtime 42.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a stack overflow vulnerability that allows guests to crash the host through recursive type drops. Guests can define a long chain of recursive types so that removing the top-level type triggers unbounded recursive drops, exhausting the host stack.

Affected products

Bytecodealliance/Wasmtimellm-fuzzy
Range: <48.0.6, <49.0.3

Patches

Vulnerability mechanics

References

github.com/bytecodealliance/wasmtime/security/advisories/GHSA-wjc8-633q-pwxrnvd
www.vulncheck.com/advisories/wasmtime-42.0.0-before-48.0.6-and-49.0.0-before-49.0.3-stack-overflow-via-type-registrynvd

News mentions

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cvss	0.345
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000