CVE-2026-115389
LOW2.3CVSS v3
—CVSS v2
—
EPSS (exploit probability)
CWE-770CWE
Description
Wasmtime before 36.0.16, 37.0.0 before 48.0.3, and 49.0.0 before 49.0.1 does not adequately account for host allocations when lifting guest values through the dynamically-typed Val API, bypassing the hostcall fuel limit. A malicious WebAssembly guest can return crafted values that allocate at least ~100x more host memory than tracked, causing denial of service.
CVSS v3 vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
Affected routers (0)
No routers currently mapped to this CVE in our database.