Memory Allocation with Excessive Size Value Affecting wasmtime package, versions <24.0.6>=25.0.0 <36.0.6>=37.0.0 <40.0.4>=41.0.0 <41.0.4
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- published25 Feb 2026
- disclosed24 Feb 2026
- creditMark Bundschuh
Introduced: 24 Feb 2026
NewCVE-2026-27204 (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
Common Weakness Enumeration (CWE) is a category system for software weaknesses
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade wasmtime to version 24.0.6, 36.0.6, 40.0.4, 41.0.4 or higher.
Overview
Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value through insufficient limits on resource allocations requested by guests. An attacker can exhaust host resources, potentially causing process crashes, panics, or degraded performance by repeatedly allocating excessive memory or handles, or by forcing the host to buffer or copy arbitrarily large amounts of data.