Sandbox file disclosure via symlink-swap race
Published May 6, 2026 · Updated May 6, 2026
A TOCTOU race in the OpenShell filesystem bridge in OpenClaw before 2026.4.22 allows remote authenticated users to read host files. The bridge checked path safety and later called fsPromises.readFile on the pathname, so a parent symlink swap redirected the read after validation. The attacker must control sandbox filesystem state and win the race; successful exploitation discloses file contents outside the mounted root.
Summary
What happened
A TOCTOU race in the OpenShell filesystem bridge in OpenClaw before 2026.4.22 allows remote authenticated users to read host files. The bridge checked path safety and later called fsPromises.readFile on the pathname, so a parent symlink swap redirected the read after validation. The attacker must control sandbox filesystem state and win the race; successful exploitation discloses file contents outside the mounted root.
The record
- CVE
- CVE-2026-44113
- Published
- May 6, 2026
- Updated
- May 6, 2026
- Vendor
- OpenClaw Foundation
- Product
- OpenClaw
- Classifications
- CWE-367, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 6, 2026CVE publishedPublication date reported by the CVE source.
- May 6, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <2026.4.22
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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