OpenClaw: Sandbox media TOCTOU could read files outside sandbox root
Date: 2026-03
Affected: npm/openclaw
Attack vector: path-traversal
Category: vulnerability-disclosure
Severity: High
CWE: CWE-367
CWE-59

### Summary Sandbox media handling had a time-of-check/time-of-use gap: media paths could be validated first and read later through a separate path. A symlink retarget between those steps could cause reads outside `sandboxRoot`. ### Impact Affected versions could permit host file reads outside the intended sandbox root in media attachment/image flows. ### Fix Media reads now use consolidated root-scoped, boundary-safe read paths at use time, removing check/use drift across call sites. ### Affected and Patched Versions - Affected: `<= 2026.2.26` - Patched: `2026.3.1`


Mitigations:

Architectural layers (MAESTRO):