Link following in OpenClaw - #VU128765
Published: May 1, 2026
Vulnerability identifier: #VU128765
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-59
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 read or modify files outside the workspace boundary.
The vulnerability exists due to improper link resolution before file access in workspace-only filesystem checks when processing in-workspace hardlink aliases that reference files outside the workspace. A remote user can create or use an in-workspace hardlink alias to read or modify files outside the workspace boundary.
This primarily affects deployments that explicitly enable workspace-only filesystem restrictions, including workspace-only apply_patch checks. By default, tools.fs.workspaceOnly is off.
Remediation
Install security update from vendor's website.