CVE-2026-53820
MediumCVSS 6.6Exploitation Probability (EPSS)
Low risk1th percentile - higher than 1% of all known CVEs
Summary
Vulnerability in OpenClaw before 2026.5.12, allowing bypass of exec denylist via MCP loopback session-spawn path. Authenticated attackers can execute broader commands.
Risk Assessment
An attacker can bypass command restrictions and perform unauthorized actions, potentially leading to privilege escalation.
Recommendation
Update OpenClaw to version 2026.5.12 or later.
Other vulnerabilities in OpenClaw
See all- CVE-2026-45006High
OpenClaw before version 2026.4.23 contains an improper access control vulnerability in the gateway tool's config.apply and config.patch operations, allowing compromised models to write unsafe configuration changes by bypassing an incomplete denylist protection.
- CVE-2026-45004High
OpenClaw before 2026.4.23 contains an arbitrary code execution vulnerability in the bundled plugin setup resolver that loads setup-api.js from process.cwd() during provider setup metadata resolution. Attackers can execute arbitrary JavaScript under the current user account by placing a malicious extensions/<plugin>/setup-api.js file in a repository.
- CVE-2026-45001High
OpenClaw before version 2026.4.20 contains a guard bypass vulnerability in the config.patch and config.apply endpoints. This vulnerability fails to protect operator-trusted settings such as sandbox policy, plugin enablement, gateway auth/TLS, and MCP server configuration.
- CVE-2026-44995High
OpenClaw before version 2026.4.20 contains an improper environment variable validation vulnerability in MCP stdio server configuration that allows attackers to execute arbitrary code. Malicious workspace configurations can pass dangerous startup variables to MCP server processes.
- CVE-2026-44118High
OpenClaw before version 2026.4.22 derives loopback MCP owner context from spoofable server-issued bearer tokens in request headers. Non-owner loopback clients can present themselves as owner to bypass owner-gated operations.
- CVE-2026-44115High
OpenClaw before version 2026.4.22 contains an exec allowlist analysis vulnerability allowing shell expansion hiding in unquoted heredoc bodies. Attackers can bypass allowlist validation by embedding shell expansion tokens in heredoc bodies to execute unapproved commands at runtime.
- CVE-2026-44114High
OpenClaw before version 2026.4.20 fails to properly reserve the OPENCLAW_ runtime-control environment namespace in workspace dotenv files, allowing attackers to override critical runtime variables. Malicious workspaces can set variables like OPENCLAW_GIT_DIR to manipulate trusted OpenClaw runtime behavior during source-update or installer flows.
- CVE-2026-44110High
OpenClaw before version 2026.4.15 contains an authorization bypass vulnerability in Matrix room control-command authorization. Attackers with DM-paired sender IDs can execute room control commands without being in configured allowlists.
- CVE-2026-43585High
OpenClaw before version 2026.4.15 captures resolved bearer-auth configuration at startup, allowing revoked tokens to remain valid after SecretRef rotation. Gateway HTTP and WebSocket handlers fail to re-resolve authentication per-request.
- CVE-2026-43584High
OpenClaw before 2026.4.10 contains an insufficient environment variable denylist vulnerability in its exec environment policy. Attackers can manipulate these environment variables to influence execution behavior and network connectivity.
Original NVD description (English source)
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.