Subscriber RCE in RepairBuddy <= 4.1224

Executive Summary

CVE-2026-81803 is a Subscriber Remote Code Execution (RCE) vulnerability affecting RepairBuddy plugin versions 4.1224 and below. It allows attackers to execute arbitrary commands on websites running the vulnerable plugin, potentially leading to full site compromise.

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Detection Guidance

Check if the RepairBuddy plugin version is 4.1224 or lower. Look for signs of unauthorized code execution or suspicious activity in server logs. Use security tools to scan for known indicators of compromise related to this RCE flaw.

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Impact Analysis

This vulnerability can allow attackers to take full control of your website, steal data, install malware, or deface the site. It may also be targeted in mass-exploit campaigns, increasing the risk of widespread attacks.

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Compliance Impact

This vulnerability could lead to unauthorized code execution on affected systems, potentially exposing sensitive data. For GDPR, this may result in unauthorized access to personal data, triggering breach notification requirements. For HIPAA, it could compromise protected health information, violating compliance. The high-risk nature of RCE increases the likelihood of such violations.

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Mitigation Strategies

Update the RepairBuddy plugin to version 4.1225 or later immediately. Apply Patchstack's provided mitigation rule to block attacks until the update is complete. Review server logs for signs of exploitation and remove any unauthorized files or scripts.

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