CVE-2026-62191 Overview
CVE-2026-62191 is an authorization bypass vulnerability [CWE-862] in OpenClaw versions 2026.6.6 through 2026.6.8. The flaw resides in the message mutation handling path, where lower-trust callers can invoke actions that require stronger authorization checks. Attackers exploit misconfigured input paths to skip requester authorization and execute privileged operations when the affected feature is enabled and network-reachable. The vulnerability is exploitable over the network with low attack complexity and requires only low-level privileges.
Critical Impact
An authenticated low-privilege attacker can bypass authorization on OpenClaw message mutation handlers and perform privileged operations, resulting in high integrity impact on the affected application.
Affected Products
- OpenClaw 2026.6.6 (Node.js distribution)
- OpenClaw versions after 2026.6.6 and before 2026.6.9
- OpenClaw deployments where the vulnerable message mutation feature is enabled and reachable
Discovery Timeline
- 2026-07-13 - CVE-2026-62191 published to the National Vulnerability Database
- 2026-07-14 - Last updated in NVD database
Technical Details for CVE-2026-62191
Vulnerability Analysis
The vulnerability originates in OpenClaw's message mutation handling logic. Mutation operations are intended to be gated by requester authorization checks. However, specific input paths bypass these checks when the caller submits crafted mutation messages. This allows a caller with lower trust to execute operations reserved for higher-privilege principals. The impact is concentrated on integrity, since attackers can perform state-changing actions they are not authorized to invoke. Confidentiality is not directly affected, and availability impact is limited.
Root Cause
The root cause is a missing authorization check [CWE-862] on the message mutation code path. The application evaluates authorization on certain entry points but fails to enforce equivalent checks when requests arrive through the mutation handler. Because authorization enforcement is inconsistent across the input surface, callers that would normally be rejected can reach privileged operations by routing their requests through the vulnerable path.
Attack Vector
Exploitation requires network access to a reachable OpenClaw instance and a valid low-privilege account. The attacker crafts a mutation message targeting an action requiring elevated privileges and submits it to the vulnerable handler. Because the requester authorization step is skipped, the operation proceeds. No user interaction is required. The vulnerability is only exploitable when the affected feature is enabled in the deployment configuration.
No verified proof-of-concept code is publicly available. For technical specifics, refer to the VulnCheck Advisory on Bypass and the GitHub Security Advisory GHSA-v7hx-r36p-f68m.
Detection Methods for CVE-2026-62191
Indicators of Compromise
- Application logs showing successful privileged mutation operations initiated by accounts that lack the corresponding role assignments.
- Unexpected state changes to protected resources correlated with authenticated sessions belonging to low-trust users.
- Elevated volumes of mutation-type requests from a single principal or source IP against OpenClaw endpoints.
Detection Strategies
- Inventory all OpenClaw deployments and identify the running version by querying package metadata for openclaw between 2026.6.6 and 2026.6.8.
- Enable verbose audit logging on mutation handlers and compare invoked actions against the requester's expected role.
- Correlate authentication events with mutation request outcomes to identify authorization decisions that should have failed but succeeded.
Monitoring Recommendations
- Forward OpenClaw application and access logs to a centralized logging platform for retention and anomaly detection.
- Alert on privileged action invocations from accounts whose role does not include the invoked capability.
- Track outbound state changes performed through mutation handlers and baseline expected volumes per principal.
How to Mitigate CVE-2026-62191
Immediate Actions Required
- Upgrade OpenClaw to version 2026.6.9 or later on all affected Node.js deployments.
- Restrict network exposure of OpenClaw instances to trusted client networks until patching is complete.
- Review recent audit logs for privileged mutation operations that may indicate prior exploitation.
- Rotate credentials for any accounts that could have been leveraged to invoke unauthorized mutations.
Patch Information
The vendor has released a fixed version. Upgrade openclaw to 2026.6.9 or later using the standard npm package installation workflow. Refer to the GitHub Security Advisory GHSA-v7hx-r36p-f68m for the authoritative fix details and version constraints.
Workarounds
- Disable the message mutation feature in OpenClaw configuration if it is not required by the application.
- Enforce network-layer access controls to limit which clients can reach OpenClaw mutation endpoints.
- Apply strict role-based access control at an upstream API gateway to compensate for the missing authorization check until the patch is applied.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
