CVE-2026-78291 in RepairBuddy Plugin
Summary
by MITRE • 08/24/2026
Unauthenticated Broken Access Control in RepairBuddy <= 4.1223 versions.
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Analysis
by VulDB Data Team • 08/24/2026
The vulnerability identified as an unbroken access control issue within RepairBuddy versions prior to or equal to 4.1223 represents a critical failure in the application's authentication and authorization mechanisms. This flaw allows attackers who have not authenticated themselves into the system to perform actions that should be restricted to authorized users, such as administrators or verified technicians. In web applications like RepairBuddy, which manage sensitive customer data, repair orders, and potentially financial information, access control is paramount for maintaining integrity and confidentiality. The absence of proper checks means that any individual with knowledge of the application's URL structure or API endpoints can interact directly with protected resources without providing valid credentials. This type of vulnerability typically stems from a lack of server-side validation on incoming requests, where the application assumes that if a request reaches a specific endpoint, it must be legitimate, ignoring the necessity to verify user identity and permissions for every action performed.
From a technical perspective, this broken access control often manifests through insecure direct object references or missing function-level access controls. Attackers can exploit this by manipulating parameters in HTTP requests, such as changing an order ID from one belonging to another customer to view details they are not authorized to see, or by accessing administrative panels directly if the URL path is predictable and lacks additional security layers like CAPTCHA or rate limiting for unauthenticated users. The core technical flaw lies in the application logic failing to enforce a strict separation between public-facing interfaces and private management functions. When an API endpoint does not check the session token or cookie associated with the request against the required permission levels, it effectively bypasses the intended security boundary. This is particularly dangerous because automated tools can easily scan for these weaknesses by iterating through common administrative paths or parameter values to discover unprotected resources.
The operational impact of this vulnerability is severe and multifaceted. For customers using RepairBuddy, it poses a significant risk to their personal privacy as sensitive information such as contact details, vehicle identification numbers, repair histories, and payment information can be exfiltrated by malicious actors. Beyond data breach concerns, the integrity of business operations is compromised because attackers could potentially modify or delete critical records, leading to financial loss and reputational damage for service providers relying on the platform. Furthermore, this vulnerability serves as a potential entry point for more sophisticated attacks. An attacker with unauthenticated access might escalate privileges by exploiting subsequent logic flaws within the application, such as SQL injection in input fields that are accessible without login, or they could use their foothold to launch cross-site scripting attacks against authenticated users who visit compromised pages generated through these unprotected endpoints.
This vulnerability aligns closely with CWE-284, which describes Improper Access Control, and is a primary component of the OWASP Top 10 list under Broken Access Control. In terms of offensive security frameworks like MITRE ATT&CK, this flaw facilitates techniques related to Initial Access and Privilege Escalation, allowing adversaries to bypass authentication controls to gain unauthorized entry into systems. To mitigate these risks, developers must implement robust server-side authorization checks for every endpoint, ensuring that each request is validated against the user's current session and assigned roles before processing any data modification or retrieval operations. Utilizing established frameworks with built-in access control mechanisms can reduce implementation errors. Additionally, implementing strict input validation, employing principle of least privilege in system design, and conducting regular security audits using both static analysis tools and manual penetration testing are essential steps to identify and remediate such vulnerabilities. Regular updates to the RepairBuddy software should be prioritized as newer versions likely contain patches that enforce these critical access controls properly.