CVE-2026-119133
LOW
NVD
CVSS Score
2.6
Severity
LOW
Published
Oct 29, 2026
Vendor
unknown
Description
Wasmtime 47.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a memory misalignment flaw in VMContext layout that causes undefined behavior when modules contain an odd number of exception tags. A WebAssembly module with an odd tag count misaligns subsequent host fields in embedders with exceptions enabled, although no exploitation path is currently known.