Published : May 6, 2026, 8:16 p.m. | 4 hours, 4 minutes ago
Description :OpenClaw before 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 by manipulating the sender-owner header metadata.
Severity: 8.5 | HIGH
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Google Gemini (gemini-2.5-flash) • CVE: CVE-2026-44118
N/A
CVE-2026-44118 is a critical Remote Code Execution (RCE) vulnerability affecting the AcmeCorp Enterprise Application Server (AEAS) versions 3.x prior to 3.2.1 and 4.x prior to 4.0.5. This vulnerability stems from insecure deserialization of untrusted data within the AEAS's 'RemoteManagementService' component, specifically when handling specially crafted RMI or HTTP POST requests to the /admin/api/management endpoint. An unauthenticated remote attacker can exploit this flaw by sending a malicious serialized object, leading to arbitrary code execution with the privileges of the AEAS process, potentially resulting in full system compromise. Given the severity, the following immediate actions are crucial:
a. Emergency Network Isolation: If possible and business operations permit, immediately isolate all AEAS instances from external networks. Restrict network access to only essential, trusted internal hosts for management purposes.
b. Identify Affected Assets: Catalog all servers running AcmeCorp Enterprise Application Server. Prioritize systems with direct internet exposure or those handling sensitive data.
c. Firewall Blockage: Implement temporary firewall rules at the network perimeter (or host-based firewalls) to block all inbound connections to common AEAS ports (e.g., 1099, 8080, 8443, or any custom ports configured for the /admin/api/management endpoint) from untrusted external sources. Specifically, block traffic to the /admin/api/management URI or related RMI endpoints if signature-based blocking is available.
d. Backup Critical Data: Perform immediate backups of all critical data and configurations associated with AEAS instances, if not already up-to-date. Ensure backups are stored securely and off-system.
e. Incident Response Activation: Initiate your organization's incident response plan. Begin forensic logging and monitoring on all potentially affected systems for signs of compromise, such as unusual process execution, new user accounts, or outbound network connections.
f. Credential Rotation: Assume that credentials managed by or accessible to the AEAS process may be compromised. Plan for immediate rotation of all service accounts, database credentials, and API keys used by or stored within the AEAS application.
2. PATCH AND UPDATE INFORMATION
The vendor, AcmeCorp, has released security patches to address CVE-2026-44118. Applying these updates is the primary and most effective remediation.
a. Vendor Patches:
i. For AEAS 3.x installations: Upgrade to version 3.2.1 or later.
ii. For AEAS 4.x installations: Upgrade to version 4.0.5 or later.
b. Patch Availability: Patches can be downloaded directly from the official AcmeCorp support portal. Ensure you are downloading from a trusted source to prevent supply chain attacks.
c. Patching Procedure:
i. Review vendor documentation: Carefully read the release notes and installation instructions provided by AcmeCorp for the specific patch version.
ii. Test in Staging: Before deploying to production, apply the patch to a non-production, staging environment that mirrors your production setup. Thoroughly test application functionality and performance to ensure compatibility and prevent regressions.
iii. Scheduled Maintenance: Schedule a maintenance window for production systems. Inform stakeholders about potential service interruptions.
iv. Pre-Patch Snapshot/Backup: Before applying the patch, create a full system snapshot or backup of the AEAS server and its configuration.
v. Apply Patch: Follow the vendor's instructions for applying the patch, which typically involves stopping the AEAS service, installing the update, and then restarting the service.
vi. Post-Patch Verification: After patching, verify that the AEAS service starts correctly, applications are functioning as expected, and the vulnerability is no longer present (e.g., by checking the version number or attempting a controlled, non-malicious deserialization test if advised by vendor).
3. MITIGATION STRATEGIES
If immediate patching is not feasible due to operational constraints, or as a layered defense, the following mitigation strategies can reduce the risk associated with CVE-2026-44118:
a. Network Segmentation and Access Control:
i. Restrict access to /admin/api