Vulnerability RUSTSEC-2026-0380

Critical
CRITICAL RISK
CVSS Score: 9.9
Score Range: 9.0–10.0
Critical severity vulnerabilities (CVSS 9.0–10.0). These represent the highest impact issues.
1 day ago
October 19, 2026 at 12:00 PM UTC
Bit-packing in Cranelift compiler causes silent overflow and miscompilation
0.0.0 - 36.0.18 and 37.0.0 - 42.0.2
0.0.0 - 36.0.18 and 37.0.0 - 42.0.2

Summary

Bit-packing in Cranelift compiler causes silent overflow and miscompilation

Details

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-897f-g5gm-fmxm For more information see the GitHub-hosted security advisory.

Impacted packages

Timeline

Published
1 day ago
October 19, 2026 at 12:00 PM UTC
Fixed (43.0.0)
7 months ago
March 20, 2026 at 06:05 AM UTC
Fixed (36.0.19)
22 hours ago
October 19, 2026 at 07:05 PM UTC
Last Modified
5 hours ago
October 20, 2026 at 11:15 AM UTC