Description

Unauthenticated Broken Access Control in Online Contact Widget <= 1.3.0 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.5",
  "pubDate": "2026-08-18T15:16:52.817Z",
  "pubdate": "2026-08-18T15:16:52.817Z",
  "executiveSummary": "An unauthenticated broken access control vulnerability has been identified in the Online Contact Widget plugin affecting versions 1.3.0 and prior. This security flaw arises from a failure to properly validate user sessions, permissions, or access control checks within sensitive endpoints or functionalities exposed by the widget.\nThe vulnerability allows remote, unauthenticated attackers to interact with restricted functions or access sensitive data normally protected against unauthorized access. Successful exploitation of this flaw can lead to unauthorized data disclosure, administrative function manipulation, or unintended interactions depending on the specific backend logic exposed by the vulnerable component.\nThe risk implications are significant due to the lack of authentication requirements, enabling threat actors to automate exploitation attempts over the network with minimal friction. Remediation requires updating the Online Contact Widget to a patched version once available or applying strict access control enforcement mechanisms to the affected endpoints.",
  "technicalDetails": "The root cause of this vulnerability is improper authorization handling within the Online Contact Widget <= 1.3.0. The application fails to implement robust access control checks to verify whether incoming HTTP requests originate from authenticated or authorized users before executing sensitive operations or returning restricted data.\nThe vulnerable component resides within the codebase of the Online Contact Widget, specifically handling request routing and endpoint execution without enforcing privilege validation layers. Because the vulnerability is unauthenticated, attackers do not require valid credentials, session tokens, or specific privilege levels to interact with the vulnerable code paths.\nNetwork exposure is external, meaning any remote attacker with network connectivity to the targeted web application can initiate requests directly to the exposed endpoints. The attack flow typically begins with an attacker identifying the exposed functionality via URL enumeration or component fingerprinting.\nOnce the target endpoint is identified, the attacker crafts a malicious HTTP request targeting the function without providing authentication headers or valid session cookies. Due to the lack of access control enforcement, the backend application processes the request, bypasses security boundaries, and executes the underlying functionality.\nDepending on the exact implementation of the vulnerable handler, payload behavior may involve unauthorized retrieval of sensitive contact data, submission manipulation, or execution of privileged routines. Post-exploitation impact encompasses potential data exfiltration, unauthorized modification of application state, or further compromise of the underlying web application environment through leveraged functionality."
}