CVE-2026-55863 in motionEye
Summary
by MITRE • 09/15/2026
motionEye (mEye) is an online interface for a piece of software called "motion," which is a video surveillance program with motion detection. Prior to 0.44.0, the ActionHandler.post() method in motioneye/handlers/action.py lacks the BaseHandler.auth() decorator, allowing an unauthenticated remote attacker to send requests to /action/<camera_id>/<action>. The endpoint can trigger snapshot, record_start, and record_stop actions. When an administrator has configured action scripts, the same endpoint can invoke PTZ controls, alarm actions, lighting actions, and other predefined commands, and configured remote motionEye cameras can allow server-side requests to the remote camera service. This issue is fixed in version 0.44.0.
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Analysis
by VulDB Data Team • 09/15/2026
The vulnerability identified in motionEye versions prior to 0.44.0 represents a critical authentication bypass within the web application's action handling mechanism. motionEye serves as an online interface for the motion video surveillance software, providing users with capabilities such as motion detection and remote camera management. The core technical flaw resides specifically in the ActionHandler.post() method located in the motioneye/handlers/action.py module. This function is responsible for processing POST requests that trigger various operational commands on connected cameras or local recording systems. Due to a missing decorator, this endpoint fails to enforce the authentication checks defined by BaseHandler.auth(). Consequently, any request directed at /action/<camera_id>/<action> does not require valid credentials, allowing unauthenticated remote attackers to interact with the system directly without logging in first.
The operational impact of this vulnerability is severe due to the breadth of actions accessible through the exposed endpoint. Attackers can initiate snapshot captures, start video recordings, and stop ongoing recording sessions remotely. These basic functions alone pose significant privacy risks by enabling unauthorized surveillance or data exfiltration. However, the risk escalates dramatically when administrators have configured custom action scripts within motionEye. In such configurations, the same unauthenticated endpoint can be leveraged to execute privileged commands including PTZ (Pan-Tilt-Zoom) control adjustments, alarm triggers, and lighting manipulations. This effectively grants an attacker full administrative-like control over physical camera hardware and associated infrastructure without any form of user verification or session validation.
Furthermore, if remote motionEye cameras are configured within the system, this vulnerability facilitates server-side request forgery scenarios against those remote services. An unauthenticated actor can manipulate requests sent to these external endpoints, potentially leading to further compromise of linked surveillance nodes or internal network resources depending on how the remote connections are established and secured. The absence of access control at this layer means that any individual with network connectivity to the motionEye instance can exploit these capabilities, turning a standard video management interface into an open gateway for unauthorized physical and digital interference.
This issue is classified under CWE-287, which denotes Improper Authentication, as the system fails to adequately verify the identity of users attempting to perform administrative actions. In terms of offensive security frameworks, this vulnerability aligns with MITRE ATT&CK techniques related to Initial Access via unauthenticated endpoints and potentially Command and Control if used for persistent remote management or data staging through recorded footage. The exploitation path is straightforward given the direct exposure of the action handler without authentication guards, making it a high-severity finding in any deployment where motionEye manages sensitive surveillance infrastructure.
To mitigate this vulnerability, organizations must immediately upgrade to version 0.44.0 or later, which includes the necessary code corrections to enforce proper authorization checks on all administrative endpoints. Until an upgrade is feasible, administrators should implement network-level access controls such as firewall rules that restrict HTTP traffic to the motionEye interface exclusively from trusted IP addresses. Additionally, deploying a reverse proxy with robust authentication mechanisms in front of the application can provide an additional layer of security by validating user credentials before requests reach the vulnerable Python handlers. Regular audits of configured action scripts and remote camera connections are also recommended to ensure no unintended privileged operations remain exposed through misconfigurations that might persist even after patching if not properly reviewed.