External Control of File Name or Path in OpenClaw - CVE-2026-28459
Published: May 4, 2026
Vulnerability identifier: #VU129453
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-28459
CWE-ID: CWE-73
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote user to create or append files at an arbitrary path on the gateway host, leading to configuration corruption and cause a denial of service.
The vulnerability exists due to external control of file name or path in the gateway session transcript file handling when resolving the untrusted sessionFile path. A remote user can supply a crafted sessionFile path to create or append files at an arbitrary path on the gateway host, leading to configuration corruption and cause a denial of service.
Exploitation depends on deployment and filesystem permissions.
How to mitigate CVE-2026-28459
Install security update from vendor's website.