CVE-2026-108839

MediumCVSS 4.2/10Last modified Oct 18, 2026

Description

thClaws through 0.141.0 contains a link-following vulnerability in the post_inputs handler of the v1 API POST /v1/inputs endpoint that allows writes outside the workspace by following symlinks. Attackers who plant a symlink under the allowed inputs/ prefix can cause later authenticated uploads to write or truncate files outside the workspace with daemon privileges.

Metrics

CVSS 3.1 4.2/10CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L

Weakness enumeration

CWE-59

Affected software

No affected versions have been published.

Timeline

Published: Oct 11, 2026
Last modified: Oct 18, 2026
NVD status: Deferred

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