Description

HCL Connections is vulnerable to an information disclosure vulnerability which could allow a user to obtain sensitive information they are not entitled to, caused by improper handling of request data they are not entitled to, caused by improper handling of request data.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "3.1",
  "pubDate": "2026-08-31T16:17:55.830Z",
  "pubdate": "2026-08-31T16:17:55.830Z",
  "executiveSummary": "HCL Connections is susceptible to an information disclosure vulnerability stemming from improper request data handling.\nThis security flaw allows an authenticated or unauthenticated attacker to bypass authorization constraints and access sensitive data to which they are not explicitly entitled.\nThe vulnerability resides in the application's processing logic, where inadequate validation or sanitization of incoming requests permits the retrieval of restricted information.\nThe potential impact includes the unauthorized exposure of confidential business data, user information, or internal system configurations, which could lead to further exploitation or regulatory non-compliance.\nThe risk is categorized as significant, as the exploitation does not necessarily require complex environmental conditions beyond the ability to manipulate request parameters targeting the vulnerable endpoint.\nAttackers can leverage this flaw to gain unauthorized insights into the system's data architecture, potentially facilitating lateral movement or deeper reconnaissance within the enterprise environment.",
  "technicalDetails": "The vulnerability is rooted in the improper validation and handling of request data within the HCL Connections framework. The application fails to strictly enforce authorization checks when processing specific request structures, allowing an actor to manipulate input parameters to traverse access control boundaries.\nThe root cause is identified as an authorization bypass resulting from insecure input processing logic. When a user transmits a request, the underlying component responsible for data retrieval fails to verify if the requester possesses the necessary permissions to access the specifically requested resource or dataset.\nThe exploitation flow begins with an attacker identifying a vulnerable API endpoint or a specific request path within HCL Connections that is susceptible to improper input parsing. The attacker then crafts a malicious request—often by modifying parameters, headers, or identifiers—intended to force the application to return data objects typically restricted to higher-privileged users or system administrators.\nBecause the server-side logic does not properly re-validate the user's entitlements against the requested resource ID after the initial request parsing, the application processes the request as a legitimate query. The vulnerable component proceeds to fetch the requested sensitive information from the database or the underlying data storage and renders it back to the client in the HTTP response.\nThis vulnerability is particularly concerning as it bypasses the intended access control model of the HCL Connections platform. An attacker with standard user-level access—or in some configurations, an unauthenticated user—could potentially perform bulk data extraction by systematically iterating through object identifiers in the request parameters, leading to a large-scale information leak.\nThe lack of granular access control enforcement during request processing indicates a design flaw in the application's security middleware or controller layer. The impact post-exploitation includes the compromise of Intellectual Property (IP), exposure of PII (Personally Identifiable Information), and access to proprietary collaboration data managed within the HCL Connections environment. There is no indication that this flaw allows for code execution; however, the resulting disclosure of sensitive data provides the necessary intelligence for an attacker to escalate their presence or target other integrated services."
}