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CVE-2026-53817 is a vulnerability in OpenClaw versions prior to 2026.5.22 that stems from insufficient locality validation during the Control UI device pairing process. The pairing mechanism relies on locality-derived trust signals (such as network proximity or shared token presence) to determine whether a pairing request should be approved. However, an attacker with network access to the Control UI pairing path can spoof these locality signals. Because the system treats these signals as sufficient for granting administrative-level device tokens, the attacker is able to obtain a durable, admin-capable token.
This issue is particularly dangerous because the resulting token is not merely temporary—it remains valid even after the shared gateway token is rotated, persisting until the paired device is explicitly removed. The attack is not an unauthenticated internet exposure issue; it requires that the attacker already has the network or authentication foothold necessary to reach the Control UI pairing endpoint. In LAN-bound gateway or shared-token deployments where locality is accepted as sufficient for pairing decisions, this flaw effectively allows a temporary access path to be elevated to a persistent administrative backdoor.
The vulnerability is classified under CWE-290 (Authentication Bypass by Spoofing) and carries a CVSS v4.0 base score of 8.7 (High), with a vector of CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. The EPSS score is 0.31%, indicating a 0.31% probability of exploitation activity in the next 30 days.
DailyCVE Form
Platform: OpenClaw
Version: < 2026.5.22
Vulnerability: Locality Spoofing
Severity: High (8.7)
Date: 2026-06-11
Prediction: 2026-07-15
What Undercode Say
Check current OpenClaw version openclaw --version Check for vulnerable deployments (before 2026.5.22) npm list openclaw Monitor Control UI pairing logs for anomalies grep "Control UI pairing" /var/log/openclaw/gateway.log List paired devices openclaw gateway devices list Remove unexpected paired devices openclaw gateway devices remove <device-id>
Exploit
An attacker who has network access to the Control UI pairing path can perform the following steps to exploit this vulnerability:
1. Reach the Pairing Endpoint: The attacker must first obtain network access to the Control UI pairing path. This is typically achieved by being on the same local network as the OpenClaw gateway or by having a shared-token authentication foothold.
2. Spoof Locality Information: The attacker crafts a pairing request that includes forged locality information, such as spoofed IP addresses, manipulated network proximity headers, or falsified shared-token metadata.
3. Bypass Locality Validation: The OpenClaw Control UI pairing mechanism accepts the spoofed locality signals as valid, failing to properly verify the true network position or identity of the requesting client.
4. Obtain Durable Admin Token: As a result of the successful spoofing, the attacker receives a durable, admin-capable device token. This token grants administrative privileges over the OpenClaw instance.
5. Persist Beyond Token Rotation: Unlike temporary or shared tokens, the obtained admin token remains valid even after the gateway token is rotated. It persists until the paired device is explicitly removed from the system.
Protection
To protect against CVE-2026-53817, the following measures are recommended:
– Upgrade to Patched Version: The primary and most effective mitigation is to upgrade to OpenClaw version 2026.5.22 or later. This version includes proper locality validation that prevents spoofing attacks.
– Remove Unexpected Paired Devices: For older deployments that cannot be immediately upgraded, administrators should audit and remove any unexpected or unauthorized paired devices.
– Restrict Network Exposure: Avoid exposing Control UI pairing paths on networks with untrusted clients. Implement network segmentation to limit access to the pairing endpoint to only trusted hosts.
– Monitor Pairing Logs: Actively monitor gateway logs for unusual pairing requests or unexpected device pairings. The presence of such events may indicate an ongoing exploitation attempt.
– Apply Security Advisories: Follow the official GitHub Security Advisory (GHSA-chr9-m4q2-76hw) for additional guidance and updates.
Impact
The successful exploitation of CVE-2026-53817 has the following impacts:
– Persistent Administrative Access: Attackers can obtain durable admin-capable device tokens that grant full administrative control over the OpenClaw instance.
– Token Persistence: The obtained tokens survive gateway token rotation, providing long-term access even after shared credentials are changed.
– Elevation of Privilege: A temporary or shared Control UI access path can be escalated to a persistent administrative backdoor.
– Compromise of Confidentiality, Integrity, and Availability: The CVSS v4.0 metrics indicate high impact on confidentiality, integrity, and availability (VC:H/VI:H/VA:H).
– Wide Affected Deployments: This issue affects LAN-bound gateways and shared-token Control UI deployments where locality signals are accepted as sufficient for pairing decisions.
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Sources:
Reported By: github.com
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