Executive Summary

CVE-2026-32054 is a symlink traversal vulnerability in OpenClaw versions prior to 2026.2.25. It occurs in the handling of browser trace and download output paths, where an attacker with local access can create symbolic links (symlinks) that cause file writes to escape the intended managed temporary root directory.

This means that instead of writing files only within a safe temporary directory, the attacker can redirect these writes to arbitrary locations on the file system by exploiting symlinks, potentially overwriting important files.

The vulnerability stems from insufficient validation of file paths, allowing symlink-root and symlink-parent escapes. The fix involves strict realpath-based checks to ensure all writable paths remain lexically and physically inside the designated root directory, rejecting any paths involving symlinks that lead outside.

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Detection Guidance

Detection of this vulnerability involves checking for the presence of symlink traversal attempts in the browser trace and download output paths used by OpenClaw prior to version 2026.2.25.

Since the vulnerability allows local attackers to create symbolic links that redirect file writes outside the intended temporary directories, you can look for suspicious symlinks within the OpenClaw temporary directories or monitor file writes that occur outside expected paths.

Suggested commands to detect potential exploitation attempts include:

• Find symbolic links inside the OpenClaw temporary directories (replace /path/to/openclaw/tmp with the actual path): find /path/to/openclaw/tmp -type l -exec ls -l {} \;
• Check for file writes outside the expected temporary directory by monitoring filesystem activity, for example using auditd or inotifywait on Linux.
• Use commands like: auditctl -w /path/to/openclaw/tmp -p wa ausearch -f /path/to/openclaw/tmp or inotifywait -m -r /path/to/openclaw/tmp

Additionally, reviewing OpenClaw logs for errors related to path resolution or symlink rejections may help identify attempts to exploit this vulnerability.

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Mitigation Strategies

The primary mitigation step is to upgrade OpenClaw to version 2026.2.25 or later, where the vulnerability has been fixed.

The fix involves hardening the handling of browser trace and download temporary paths by strictly validating writable paths to ensure they remain within the designated root directory and rejecting any symlink-based escapes.

• Upgrade OpenClaw to version 2026.2.25 or newer.
• If immediate upgrade is not possible, restrict local user permissions to prevent creation of symbolic links in OpenClaw temporary directories.
• Monitor and audit filesystem activity in the OpenClaw temporary directories to detect suspicious symlink creation or unauthorized file writes.
• Consider applying custom patches or workarounds that enforce path validation similar to the fix described, if feasible.

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Impact Analysis

This vulnerability allows a local attacker with limited privileges to overwrite arbitrary files on the affected system by exploiting symlink traversal in temporary file handling.

• Arbitrary file overwrite outside the intended temporary directory.
• Potential compromise of system integrity by modifying critical files.
• Possible impact on confidentiality, integrity, and availability of the system.
• Attack complexity is high and requires local access, but no user interaction is needed.

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Compliance Impact

I don't know

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