Out-of-bounds Write Affecting wasmtime-environ package, versions <24.0.7>=25.0.0 <36.0.7>=37.0.0 <42.0.2>=43.0.0 <43.0.1
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Test your applications- Snyk IDSNYK-RUST-WASMTIMEENVIRON-15967426
- published10 Apr 2026
- disclosed9 Apr 2026
- creditUnknown
Introduced: 9 Apr 2026
NewCVE-2026-35195 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade wasmtime-environ to version 24.0.7, 36.0.7, 42.0.2, 43.0.1 or higher.
Overview
wasmtime-environ is a Standalone environment support for WebAssembly code in Cranelift
Affected versions of this package are vulnerable to Out-of-bounds Write through unvalidated memory reallocation requests while transcoding strings between components. An attacker can corrupt critical data or execute unauthorized code by causing writes to memory locations outside the intended boundaries.