2255 matches found
CVE-2026-58494
A flaw was found in Wasmtime, a runtime for WebAssembly. A WebAssembly System Interface WASI guest with a read-only source file capability can exploit this vulnerability. During hard-link creation and renaming operations, the system checks directory permissions but fails to match file permissions...
CVE-2026-58494 Wasmtime: WASI hard links bypass wasmtime-wasi's FilePerms for destination
Wasmtime is a runtime for WebAssembly. Prior to 24.0.11, 36.0.12, 45.0.3, and 46.0.1, wasmtime-wasi hard-link creation and renaming check directory permissions but not matching FilePerms on source and destination preopens, allowing a WASI guest with a read-only source file capability to overwrite...
CVE-2026-54786
A flaw was found in Wasmtime, a runtime for WebAssembly. Its native implementation of WASIp1, a system interface for WebAssembly, contains a resource leak in the fdrenumber function. A malicious guest program can repeatedly call this function, causing the host system to exhaust its file descripto...
Linux Distros Unpatched Vulnerability : CVE-2026-54786
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Wasmtime is a runtime for WebAssembly. All versions prior to 24.0.10; versions 25.0.0 through those before 36.0.11; versions 37.0.0 through those before 44.0.3;...
CVE-2026-54786
Wasmtime is a runtime for WebAssembly. All versions prior to 24.0.10; versions 25.0.0 through those before 36.0.11; versions 37.0.0 through those before 44.0.3; and versions 45.0.0 and 45.0.1 contain a native implementation of WASIp1 which suffers from a leak in the fdrenumber function where the...
UBUNTU-CVE-2026-54786
Wasmtime is a runtime for WebAssembly. All versions prior to 24.0.10; versions 25.0.0 through those before 36.0.11; versions 37.0.0 through those before 44.0.3; and versions 45.0.0 and 45.0.1 contain a native implementation of WASIp1 which suffers from a leak in the fdrenumber function where the...
CVE-2026-58592
Ladybird contains a dangling-reference memory-safety flaw in its WebAssembly ESM-integration module loader. When a JavaScript function is imported into a WebAssembly module via the ESM path, WebAssemblyModule.cpp passes a stack-local Wasm::FunctionType by reference to createhostfunction, whose ho...
CVE-2026-54786 Wasmtime: Leak in WASIp1 `fd_renumber` implementation
Wasmtime is a runtime for WebAssembly. All versions prior to 24.0.10; versions 25.0.0 through those before 36.0.11; versions 37.0.0 through those before 44.0.3; and versions 45.0.0 and 45.0.1 contain a native implementation of WASIp1 which suffers from a leak in the fdrenumber function where the...
CVE-2026-54786
Wasmtime is a runtime for WebAssembly. All versions prior to 24.0.10; versions 25.0.0 through those before 36.0.11; versions 37.0.0 through those before 44.0.3; and versions 45.0.0 and 45.0.1 contain a native implementation of WASIp1 which suffers from a leak in the fdrenumber function where the...
CVE-2026-58592
Vulnerability summary (CVE-2026-58592, Ladybird): A dangling-reference memory-safety flaw in Ladybird’s WebAssembly ESM integration loader. When a JavaScript function is imported into a WebAssembly module via the ESM path, WebAssemblyModule.cpp passes a stack-local Wasm::FunctionType by reference...
EUVD-2026-41130
Ladybird contains a dangling-reference memory-safety flaw in its WebAssembly ESM-integration module loader. When a JavaScript function is imported into a WebAssembly module via the ESM path, WebAssemblyModule.cpp passes a stack-local Wasm::FunctionType by reference to createhostfunction, whose ho...
CVE-2026-58592
Ladybird contains a dangling-reference memory-safety flaw in its WebAssembly ESM-integration module loader. When a JavaScript function is imported into a WebAssembly module via the ESM path, WebAssemblyModule.cpp passes a stack-local Wasm::FunctionType by reference to createhostfunction, whose ho...
CVE-2026-58592 Ladybird - Web-Reachable Code Execution via Dangling FunctionType Reference in WebAssembly ESM Integration
Ladybird contains a dangling-reference memory-safety flaw in its WebAssembly ESM-integration module loader. When a JavaScript function is imported into a WebAssembly module via the ESM path, WebAssemblyModule.cpp passes a stack-local Wasm::FunctionType by reference to createhostfunction, whose ho...
CVE-2026-12321
A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: JIT miscompilation in the JavaScript: WebAssembly component...
Astra Linux – Vulnerability in Firefox, Thunderbird
A use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8...
SUSE CVE-2026-12321
JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152...
The vulnerability in the WebAssembly component of Mozilla Firefox, Firefox ESR, and the Thunderbird email client allows a hacker to trigger a service failure.
The vulnerability of the WebAssembly component in Mozilla Firefox, Firefox ESR, and the email client Thunderbird relates to access to an uninitialized pointer. Exploiting this vulnerability could allow a malicious actor to cause service interruptions...
CVE-2026-12321
JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152...