HIGHCVSS v3.1 7.9Vulnerability
CVE-2026-118688
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.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-10-28T19:43:42.952230+00:00
- Cvss severity
- HIGH
- Cvss score
- 7.9
- Retrieved at
- 2026-10-28T19:44:28+00:00
- Score
- 7.9
- Cvss version
- 3.1
- Last source
- NVD
- Cve id
- CVE-2026-118688
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L
- First seen by Signal
- 2026-10-28T19:44:28+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:L
- Published at
- 2026-10-28T19:17:35.973
- Last modified
- 2026-10-28T19:17:36.090
Related Entities (1)
HAS_WEAKNESS (1)
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