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Description

OpenClaw before 2026.3.11 contains a sandbox boundary bypass vulnerability in fs-bridge staged writes where temporary file creation and population are not pinned to a verified parent directory. Attackers can exploit a race condition in parent-path alias changes to write attacker-controlled bytes outside the intended validated path before the final guarded replace step executes.

PUBLISHED Reserved 2026-03-17 | Published 2026-03-31 | Updated 2026-03-31 | Assigner VulnCheck




MEDIUM: 5.8CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
HIGH: 7.5CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H

Problem types

Time-of-check Time-of-use (TOCTOU) Race Condition

Product status

Default status
unaffected

Any version before 2026.3.11
affected

2026.3.11 (semver)
unaffected

Credits

tdjackey reporter

References

github.com/...enclaw/security/advisories/GHSA-mj4p-rc52-m843 (GitHub Security Advisory (GHSA-mj4p-rc52-m843)) third-party-advisory

www.vulncheck.com/...via-unvalidated-temporary-file-creation (VulnCheck Advisory: OpenClaw < 2026.3.11 - Sandbox Boundary Bypass via Unvalidated Temporary File Creation) third-party-advisory

cve.org (CVE-2026-32988)

nvd.nist.gov (CVE-2026-32988)

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