| Component | OpenClaw |
| Severity | medium (CVSS 6.6) |
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L |
| Published (NVD) | 2026-06-12 |
| Last modified | 2026-07-23 |
| Affected versions | openclaw < 2026.5.12 |
| Fixed in | 2026.5.12 |
| Weakness | CWE-862 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade OpenClaw to
2026.5.12or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-53820
- https://github.com/openclaw/openclaw/security/advisories/GHSA-qh2f-99mv-mrcf
- https://www.vulncheck.com/advisories/openclaw-exec-denylist-bypass-in-bundle-mcp-loopback-session-spawn
Read more
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