CVE-2026-33581
OpenClaw's message tool media parameter bypasses tool policy filesystem isolation
Description
## Summary The message tool accepted `mediaUrl` and `fileUrl` aliases without applying the same sandbox localRoots validation as the canonical media path handling. ## Impact A caller constrained to sandbox media roots could read arbitrary local files by routing them through the alias parameters. ## Affected Component `src/infra/outbound/message-action-params.ts, src/infra/outbound/message-action-runner.ts` ## Fixed Versions - Affected: `< 2026.3.24` - Patched: `>= 2026.3.24` - Latest stable `2026.3.28` contains the fix. ## Fix Fixed by commit `1d7cb6fc03` (`fix: close sandbox media root bypass for mediaUrl/fileUrl aliases`). OpenClaw thanks @AntAISecurityLab for reporting.
How to fix CVE-2026-33581
To remediate CVE-2026-33581, upgrade the affected package to a fixed version below.
- —upgrade to 2026.3.24 or later
Is CVE-2026-33581 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2026.3.24
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |