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.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-59"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108839.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "0.141.0"
},
{
"fixed": "0.141.0"
}
],
"source": [
"AFFECTED_FIELD",
"DESCRIPTION"
]
}