요약
- CVE-2026-34983은(는) wasmtime, wasmtime (bytecodealliance)에 영향을 주는 보통 (CVSS 5.0) 취약점입니다.
- 향후 30일 내 악용 확률(EPSS): 0.12%, 전체 취약점의 1.6%보다 높음.
- 아직 패치 버전 정보가 없습니다. 참고 자료의 공급업체 권고를 확인하세요.
| Package | Affected versions | Patched versions |
|---|
| wasmtime PyPI | ≤ 43.0.0
| No fix yet |
| wasmtime | = 43.0.0
| No fix yet |
Description
Wasmtime is a runtime for WebAssembly. In 43.0.0, cloning a wasmtime::Linker is unsound and can result in use-after-free bugs. This bug is not controllable by guest Wasm programs. It can only be triggered by a specific sequence of embedder API calls made by the host. Specifically, the following steps must occur to trigger the bug clone a wasmtime::Linker, drop the original linker instance, use the new, cloned linker instance, resulting in a use-after-free. This vulnerability is fixed in 43.0.1.
NVD description
Wasmtime is a runtime for WebAssembly. In 43.0.0, cloning a wasmtime::Linker is unsound and can result in use-after-free bugs. This bug is not controllable by guest Wasm programs. It can only be triggered by a specific sequence of embedder API calls made by the host. Specifically, the following steps must occur to trigger the bug clone a wasmtime::Linker, drop the original linker instance, use the new, cloned linker instance, resulting in a use-after-free. This vulnerability is fixed in 43.0.1.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free