CVE-2026-34987
2 advisories.
crates.io/wasmtime CVE-2026-34987: critical
Wasmtime with Winch compiler backend on aarch64 may allow a sandbox-escaping memory access
Action: Upgrade wasmtime to 36.0.7 or later.
cargo update -p wasmtime --precise 36.0.7cargo update -p wasmtime --precise 42.0.2cargo update -p wasmtime --precise 43.0.1Affected
| introduced | fixed | last affected |
|---|---|---|
| 25.0.0 | 36.0.7 | - |
| 37.0.0 | 42.0.2 | - |
| 43.0.0 | 43.0.1 | - |
Fixed versions
| 36.0.7 | 42.0.2 | 43.0.1 |
Sources
- osv: GHSA-xx5w-cvp6-jv83
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-xx5w-cvp6-jv83
- https://nvd.nist.gov/vuln/detail/CVE-2026-34987
- https://github.com/bytecodealliance/wasmtime
- https://rustsec.org/advisories/RUSTSEC-2026-0095.html
CVE-2026-34987 · published · modified · JSON
crates.io/wasmtime CVE-2026-34987: unknown
Wasmtime with Winch compiler backend may allow a sandbox-escaping memory access
Action: Upgrade wasmtime to 36.0.7 or later.
cargo update -p wasmtime --precise 36.0.7cargo update -p wasmtime --precise 42.0.2cargo update -p wasmtime --precise 43.0.1Affected
| introduced | fixed | last affected |
|---|---|---|
| 0.0.0-0 | 36.0.7 | - |
| 37.0.0 | 42.0.2 | - |
| 43.0.0 | 43.0.1 | - |
Fixed versions
| 36.0.7 | 42.0.2 | 43.0.1 |
Sources
- osv: RUSTSEC-2026-0095
- https://crates.io/crates/wasmtime
- https://rustsec.org/advisories/RUSTSEC-2026-0095.html
- https://github.com/bytecodealliance/wasmtime/pull/13014
CVE-2026-34987 · published · modified · JSON