Description
Wasmtime 46.0.0 before 48.0.4 and 49.0.0 before 49.0.2 contains a denial of service vulnerability in the wasmtime-wasi WASIp3 implementation that allows guests to abort the Unix host process. Guests with mutable preopened directory access can call set-times or set-times-at with negative seconds timestamps before the epoch, triggering an assertion failure that crashes the host.
Metrics
CVSS 3.1 6.2/10
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| bytecodealliance | wasmtime | >= 46.0.0, < 48.0.4; >= 49.0.0, < 49.0.2 |
References
Timeline
- Published
- Oct 22, 2026
- Last modified
- Oct 26, 2026
- NVD status
- Deferred