CVE-2026-41355 is a medium-severity vulnerability affecting OpenShell versions prior to 2026.3.28. This vulnerability allows arbitrary code execution in mirror mode, which can convert untrusted sandbox files into workspace hooks. Attackers with mirror mode access can exploit this vulnerability during gateway startup, potentially executing arbitrary code on the host system. The CVSS score for this vulnerability is 5.4, indicating a medium level of risk.
Risk to organizations includes unauthorized access to systems and potential data breaches. Given the nature of this vulnerability, organizations should prioritize remediation efforts to mitigate the risk. The vulnerability was publicly disclosed on April 23, 2026, and it requires immediate attention due to the associated risks.
At this time, there is no known public exploit, and the vulnerability is not listed as actively exploited. However, organizations should maintain vigilance and apply necessary patches as soon as they are available. This situation underscores the importance of regular software updates and security assessments.
Organizations should prioritize patching immediately to ensure their systems remain secure against this vulnerability.
Vulnerability Details
The vulnerability allows arbitrary code execution via the mirror mode functionality of OpenShell. Specifically, it affects versions prior to 2026.3.28 and involves converting untrusted sandbox files into workspace hooks. The affected product is Openclaw, and it has been classified under CWE-829.
The vulnerability has a CVSS score of 5.4, indicating a medium severity level. The attack vector is local, requiring low complexity and low privileges, and passive user interaction is necessary for exploitation.
Technical Analysis
The root cause of this vulnerability stems from the mishandling of untrusted sandbox files during their conversion to workspace hooks. The attack vector is local, meaning that an attacker must have access to the local machine. The attack complexity is low, allowing for easier exploitation. Low privileges are required, and user interaction is passive, meaning that the victim does not need to take any action for the attack to occur.
The impacts of this vulnerability are significant. It has a high confidentiality impact, high integrity impact, and high availability impact. This means that if exploited, the attacker could potentially access sensitive data, modify data, and disrupt services.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2026-41355 is substantial. This vulnerability can lead to severe consequences for organizations, including unauthorized access to sensitive information and operational disruptions. The potential blast radius is considerable, especially for organizations that rely on OpenShell for critical operations.
Organizations must assess their risk based on the CVSS score of 5.4, which indicates that exploitation could result in significant harm. The urgency for remediation is further emphasized by the vulnerability's potential to allow attackers to execute code on the host system.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
OpenShell versions prior to 2026.3.28 are affected by this vulnerability. Organizations running this software should ensure they upgrade to the latest version as soon as possible.
Mitigation & Remediation
To remediate this vulnerability, organizations should apply the latest patch provided by Openclaw. Details on the patch can be found in the relevant vendor advisory.
If immediate patching is not possible, consider implementing workarounds such as disabling mirror mode to mitigate the risk associated with this vulnerability. Additionally, organizations should conduct a thorough review of their configurations and ensure that only trusted sandbox files are allowed.
For comprehensive security, organizations may also consider investing in penetration testing services to identify and address similar vulnerabilities.
Detection Guidance
Organizations should monitor logs for any anomalies during gateway startup that may indicate attempts to exploit this vulnerability. Specifically, look for unusual file access patterns or unauthorized code execution attempts.
Network signatures and alerts should be established to detect any suspicious activities associated with the use of mirror mode. Additionally, system changes should be closely monitored to ensure that unauthorized modifications are flagged and addressed promptly.
AppSecure Threat Intelligence Insight
CVE-2026-41355 illustrates the ongoing challenges faced by organizations in securing local applications. The exploitation of mirror mode to execute arbitrary code highlights the need for stringent security measures when handling untrusted files. This vulnerability serves as a reminder for security teams to regularly audit their configurations and ensure that only authorized functionalities are enabled.
Organizations should consider adopting a proactive approach to vulnerability management. This includes regular security assessments and vulnerability management programs that can effectively address and mitigate risks associated with emerging vulnerabilities.
In conclusion, organizations should remain vigilant and address the risks posed by CVE-2026-41355 through timely remediation and enhanced security practices.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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