CVE-2026-53820 OpenClaw < 2026.5.12 - Exec Denylist Bypass in Bundle MCP Loopback Session Spawn
Authenticated attackers can bypass exec denylist restrictions in OpenClaw's MCP session spawning, enabling unauthorized command execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-53820?
CVE-2026-53820 is a medium-severity vulnerability in Openclaw Openclaw, published on 12 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
OpenClaw before 2026.5.12 contains an exec denylist bypass vulnerability in the bundle MCP loopback session-spawn path that allows authenticated callers to bypass intended command restrictions. Attackers can reach the affected bundled MCP session-spawn path to start sessions with broader command reach than intended.
Weakness: CWE-862
Which versions are affected by CVE-2026-53820?
2 open source packages ship an affected version, including openclaw. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
openclaw npm | All versions | 2026.5.12 |
openclaw npm | All versions | 2026.5.12 |
Products include Openclaw Openclaw.
How do I fix CVE-2026-53820?
Upgrade openclaw to 2026.5.12 or later.
Is CVE-2026-53820 being exploited?
There is no known exploitation of CVE-2026-53820 in the wild and no public exploit code.
Other vulnerabilities in Openclaw Openclaw
- CVE-2026-28363 Security feature bypass in OpenClaw
- CVE-2026-30741 Code injection in n/a
- CVE-2026-33579 OpenClaw < 2026.3.28 - Privilege Escalation via Missing Caller Scope Validation in Device Pair Approval
- CVE-2026-32922 OpenClaw < 2026.3.11 - Privilege Escalation via Unvalidated Scope in device.token.rotate
- CVE-2026-32978 OpenClaw < 2026.3.11 - Approval Bypass via Unrecognized Script Runners
Sources
Also known as GHSA-jxfq-h7pm-67ph, GHSA-qh2f-99mv-mrcf, MINI-g24w-7f5h-r52v, MINI-hv76-2hqf-48fh.