CVE-2026-119133
Low · 2.6CVSS
2.6
EPSS
0.2%
Published
Oct 29, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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