Symlink Following Affecting rust-wasmtime package, versions *


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.24% (16th percentile)

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  • Snyk IDSNYK-ECHOLATEST-RUSTWASMTIME-21817025
  • published29 Oct 2026
  • disclosed28 Oct 2026

Introduced: 28 Oct 2026

NewCVE-2026-118688  (opens in a new tab)
CWE-61  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest rust-wasmtime.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rust-wasmtime package and not the rust-wasmtime package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

wasmtime-wasi in Wasmtime before 36.0.18, 37.0.0 before 48.0.6, and 49.0.0 before 49.0.3 re-appends a trailing slash to rename source paths, causing renameat on macOS and FreeBSD hosts to follow directory symlinks. A guest with sandbox write access can rename a relative symlink such as "up/" to move host directories into its sandbox and read or write them.

CVSS Base Scores

version 3.1