CVE-2024-38358

LowCVSS 2.9/10Last modified Jun 17, 2026

Description

Wasmer is a web assembly (wasm) Runtime supporting WASIX, WASI and Emscripten. If the preopened directory has a symlink pointing outside, WASI programs can traverse the symlink and access host filesystem if the caller sets both `oflags::creat` and `rights::fd_write`. Programs can also crash the runtime by creating a symlink pointing outside with `path_symlink` and `path_open`ing the link. This issue has been addressed in commit `b9483d022` which has been included in release version 4.3.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Metrics

CVSS 3.1 2.9/10CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-22

Affected software

Vendor	Product	Versions
wasmerio	wasmer	< 4.3.2
wasmer	wasmer	< 4.3.2

References

Timeline

Published: Jun 19, 2024
Last modified: Jun 17, 2026
NVD status: Deferred

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