CVE-2026-118688

CVE-2026-118688CVE-2026-118688

Description

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.

Scoring

CVSS 7.9 ()
VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L
Last modified2026-10-28
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.