Access Control Bypass Affecting wasmtime-wasi package, versions <24.0.9>=25.0.0 <36.0.10>=37.0.0 <44.0.2
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- published25 May 2026
- disclosed21 May 2026
- creditshumbo
Introduced: 21 May 2026
NewCVE-2026-47261 (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-wasi to version 24.0.9, 36.0.10, 44.0.2 or higher.
Overview
wasmtime-wasi is a Crate defining the Wasi type for Wasmtime, which represents a WASI instance which may be added to a linker.
Affected versions of this package are vulnerable to Access Control Bypass via the path_open process. An attacker can gain unauthorized write access by exploiting the bypass of FilePerms::WRITE host restriction.