Description

Unauthenticated Broken Access Control in RepairBuddy <= 4.1223 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "5.3",
  "pubDate": "2026-08-24T12:16:56.110Z",
  "pubdate": "2026-08-24T12:16:56.110Z",
  "executiveSummary": "An unauthenticated broken access control vulnerability has been identified in the RepairBuddy application affecting versions 4.1223 and prior. This security flaw arises from inadequate authorization enforcement within the software architecture, permitting unauthenticated remote threat actors to bypass security controls and interact directly with restricted application endpoints and administrative functions. The primary impact of this vulnerability involves unauthorized data exposure, potential modification of critical application records, and complete compromise of system integrity without requiring valid user credentials. Affected systems include any deployments running the vulnerable RepairBuddy versions exposed to internal networks or the public internet. The risk implications are severe, as low-complexity exploitation grants unauthorized individuals arbitrary access to sensitive business logic and data repositories. Attacker capabilities include initiating HTTP requests directly to protected backend handlers that lack proper session validation and access permission checks. No specific user interaction is required for successful exploitation, making automated reconnaissance and mass exploitation viable vectors for malicious actors seeking to compromise vulnerable instances.",
  "technicalDetails": "The vulnerability stems from a fundamental flaw in access control enforcement within RepairBuddy versions 4.1223 and earlier. Specifically, the application fails to validate whether incoming HTTP requests originate from authenticated and authorized sessions before executing sensitive backend operations or serving restricted data. The root cause is characterized by missing function-level access control checks in the routing and controller logic, where endpoints intended solely for privileged administrators or authenticated users are left globally accessible to anonymous visitors.\nExploitation of this vulnerability requires network connectivity to the target instance of RepairBuddy. Because the affected endpoints lack authentication requirements and privilege validations, an unauthenticated attacker can directly craft and issue HTTP requests targeting restricted functional pathways. The attack flow typically begins with the enumeration of application endpoints, often facilitated by predictable URL structures, directory paths, or exposed routing maps within the client-side code or documentation.\nOnce the target endpoints are identified, the attacker transmits crafted HTTP GET or POST payloads directly to the vulnerable component. Upon receipt, the application processes the request and executes the underlying business logic, returning sensitive data or performing state-changing operations—such as modifying repair records, accessing user data, or executing administrative commands—despite the absence of a valid security context or session cookie. The payload behavior depends heavily on the specific targeted endpoint, but generally results in unauthorized read or write operations against the underlying database or file system.\nThe post-exploitation impact includes unauthorized data exfiltration of customer and repair details, potential administrative privilege escalation via improper record manipulation, and broader compromise of the hosting environment if integrated services are subsequently abused. Remediation requires the implementation of robust, centralized access control mechanisms that verify authentication status and user roles prior to servicing requests across all sensitive application endpoints."
}