CVE-2026-32819 Overview
CVE-2026-32819 is an improper authorization vulnerability [CWE-285] in dataCycle-CORE, the module handling core processing and framework rules for the dataCycle data management system. Versions up to and including 25.07.3 allow an authenticated Standard user to enumerate other users through the /users/search endpoint. The endpoint returns names and email addresses even when direct access to those user profiles is denied elsewhere in the application. The exposed data includes internal staff addresses, full names, and the existence of guest and external test accounts.
Critical Impact
Authenticated low-privilege users can harvest internal staff and guest account identities, providing reconnaissance data for phishing, credential-stuffing, and targeted social engineering campaigns.
Affected Products
- dataCycle-CORE versions up to and including 25.07.3
- dataCycle data management system deployments using the affected module
- Any instance exposing the /users/search endpoint to Standard users
Discovery Timeline
- 2026-07-20 - CVE-2026-32819 published to NVD
- 2026-07-21 - Last updated in NVD database
Technical Details for CVE-2026-32819
Vulnerability Analysis
The vulnerability resides in the /users/search endpoint of dataCycle-CORE. The endpoint enforces access controls on individual user profile pages but fails to apply the same authorization checks on the search interface. A Standard user can issue search queries and receive result sets that expose the names and email addresses of every user in the system.
The leaked data is directly usable for follow-on attacks. Attackers can compile a list of internal staff email addresses for spear phishing, identify high-value targets by role or department, and discover latent guest or test accounts that may use weak or default credentials. The /users/search response also confirms account existence, enabling attackers to seed credential-stuffing campaigns against known valid identifiers.
Root Cause
The root cause is inconsistent authorization enforcement across related endpoints. The application blocks direct profile access for Standard users but omits equivalent server-side checks on the search API. This is a classic Broken Access Control pattern where an ancillary data path bypasses the primary object-level authorization logic.
Attack Vector
Exploitation requires network access and valid Standard user credentials. No user interaction on the victim side is needed. An attacker sends authenticated HTTP requests to /users/search with search terms and parses returned records to extract user identity data. See the GitHub Security Advisory GHSA-c4wj-q23r-mq2q for maintainer-provided technical details.
Detection Methods for CVE-2026-32819
Indicators of Compromise
- Repeated authenticated requests from a single session to /users/search with varying query parameters
- Standard-role accounts generating search response volumes inconsistent with normal usage baselines
- Sequential or alphabetically ordered search terms suggesting scripted enumeration
- Access to /users/search from IP ranges or user agents not previously associated with the account
Detection Strategies
- Enable verbose access logging on the dataCycle-CORE web tier and retain full request URIs and query strings
- Baseline normal /users/search usage per role and alert on statistical deviations
- Correlate search-endpoint activity with subsequent outbound phishing or authentication anomalies
- Ingest web and application logs into a centralized analytics platform such as Singularity Data Lake for cross-source correlation and retention
Monitoring Recommendations
- Track request rates to /users/search per authenticated principal and enforce a rate-limit alert threshold
- Monitor for large response payloads returned to Standard-role sessions
- Review session logs for accounts that query the search endpoint but never access the associated profiles
How to Mitigate CVE-2026-32819
Immediate Actions Required
- Upgrade dataCycle-CORE to a version later than 25.07.3 once a fixed release is available from the maintainers
- Audit all Standard-role accounts and revoke unused, guest, and legacy test accounts
- Review historical access logs for /users/search calls to identify prior enumeration activity
- Notify staff whose email addresses may have been enumerated so they can watch for targeted phishing
Patch Information
Refer to the dataCycle-CORE GitHub Security Advisory GHSA-c4wj-q23r-mq2q for the authoritative patch guidance and fixed version information published by the maintainers.
Workarounds
- Restrict access to /users/search at the reverse proxy or web application firewall so only elevated roles can reach the endpoint
- Apply request rate limiting on /users/search to slow automated enumeration attempts
- Disable or remove unused guest and external test accounts to reduce the value of any successful enumeration
- Enforce email address minimization by returning only user identifiers required for legitimate search workflows
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
