Advisories

OpenClaw < 2026.4.22 - Symlink Swap Race Condition in OpenShell FS Bridge Writes

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severity
medium
date
Affecting
  • OpenClaw < 2026.4.22

CWE
  • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
CVSS
6
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
vladimir tokarev (@VladimirEliTokarev)
Description
OpenClaw before 2026.4.22 contains a time-of-check/time-of-use race condition in OpenShell sandbox filesystem writes that allows attackers to redirect writes outside the intended mount root. Attackers can exploit symlink swaps during filesystem operations to bypass sandbox restrictions and write files outside the local mount root.

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