Description

Unauthenticated Sensitive Data Exposure in Edwiser Bridge <= 4.3.4 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.2",
  "pubDate": "2026-10-06T09:17:45.287Z",
  "pubdate": "2026-10-06T09:17:45.287Z",
  "executiveSummary": "This vulnerability is an Unauthenticated Sensitive Data Exposure flaw identified in the Edwiser Bridge plugin for WordPress, affecting all versions up to and including 4.3.4.\nThe vulnerability originates from improper access control mechanisms, allowing unauthorized, remote attackers to retrieve sensitive information without requiring authentication.\nThe impact includes the potential unauthorized disclosure of internal system data, user information, or configuration details, depending on the specific data exposed by the affected endpoints.\nThe risk is categorized as high due to the lack of authentication requirements, allowing for trivial exploitation by any network-adjacent or remote attacker with access to the web server.\nThere are no specific privilege requirements for exploitation, and the attack surface is exposed directly through the WordPress environment hosting the plugin.",
  "technicalDetails": "The vulnerability resides within the request handling logic of the Edwiser Bridge plugin, specifically where sensitive data retrieval functions are improperly exposed to unauthenticated users.\nThe root cause is a failure to implement adequate authorization checks (such as WordPress capability checks using current_user_can() or nonce verification) within the plugin's action handlers or REST API endpoints.\nIn affected versions (<= 4.3.4), the plugin facilitates the exposure of restricted data by failing to validate the requester's session or role before executing sensitive data-fetching functions.\nThe attack flow begins with an attacker identifying the reachable endpoint associated with the vulnerable Edwiser Bridge functionality. Because the plugin does not enforce authentication, the attacker can send a standard HTTP GET or POST request to the endpoint.\nUpon receiving the request, the server executes the associated PHP function responsible for querying the database or internal plugin cache. Since no authentication middleware is invoked, the function proceeds to retrieve the requested sensitive information and returns it directly in the HTTP response body, typically in JSON format.\nThis behavior allows an attacker to enumerate information that should be restricted to administrative or authenticated users. The exploit does not require specialized technical expertise or complex payloads; standard web request tools such as cURL or browser-based development tools are sufficient to trigger the information disclosure.\nPost-exploitation, the attacker may gain visibility into sensitive user data, system configurations, or other internal application details that facilitate further reconnaissance or targeted attacks against the WordPress instance.\nThe vulnerable component is identified as the endpoint handler responsible for the information retrieval process within Edwiser Bridge. Given the version range, all instances of Edwiser Bridge up to 4.3.4 are susceptible to this exposure if the plugin is installed and active, regardless of the specific WordPress configuration, assuming the plugin’s entry point is reachable over the network."
}