CVE-2025-9240: Eladmin Information Disclosure Vulnerability

CVE-2025-9240 Overview

CVE-2025-9240 is an information disclosure vulnerability in elunez eladmin versions up to 2.7. The flaw resides in the /auth/info endpoint, where unknown functionality handling returns sensitive data to authenticated low-privilege users. Attackers can trigger the issue remotely over the network. A public exploit has been released, increasing the likelihood of opportunistic abuse against exposed deployments.

Critical Impact

Remote attackers with low privileges can retrieve sensitive information exposed by the /auth/info endpoint in eladmin management console deployments.

Affected Products

• elunez eladmin versions up to and including 2.7
• Deployments exposing the /auth/info endpoint to untrusted networks
• Downstream applications embedding the vulnerable eladmin framework

Discovery Timeline

• 2025-08-20 - CVE-2025-9240 published to the National Vulnerability Database
• 2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-9240

Vulnerability Analysis

The vulnerability affects the /auth/info route in the eladmin administrative framework. The endpoint returns authentication-related information without applying sufficient restrictions on what data is exposed to the caller. Any authenticated user with low privileges can issue a request and receive data that should be access-controlled. The weakness is categorized under [CWE-200] (Exposure of Sensitive Information to an Unauthorized Actor).

Because eladmin is a Spring Boot based rapid-development backend used in administrative portals, the exposed data can include details useful for lateral movement or targeted follow-on attacks. The attack surface is reachable over HTTP, requires no user interaction, and depends only on possession of a valid low-privilege account.

Root Cause

The root cause is missing or insufficient authorization filtering on data returned from the /auth/info handler. Rather than scoping the response to the caller's identity, the handler returns information that should remain restricted to higher-privileged roles or server-side use. Public issue tracking at elunez/eladmin issue #885 documents the behavior.

Attack Vector

An attacker authenticates to the eladmin instance with a low-privilege account, then sends a crafted HTTP request to /auth/info. The response discloses sensitive information that the attacker uses for reconnaissance or privilege escalation. No specialized tooling is required because the issue is exercised through standard REST interactions, and a public proof of concept has been disclosed.

Exploitation is performed through standard authenticated HTTP requests
to the /auth/info endpoint. Refer to the vendor issue tracker for
reproduction details: https://github.com/elunez/eladmin/issues/885

Detection Methods for CVE-2025-9240

Indicators of Compromise

• Repeated authenticated GET requests to /auth/info from a single session or source IP
• Access to /auth/info from accounts that have no operational need to view authentication metadata
• Request patterns from low-privilege accounts enumerating administrative endpoints shortly after login

Detection Strategies

• Create web server and application log rules alerting on access to /auth/info outside expected administrative workflows
• Baseline normal /auth/info usage by role, then alert on deviations such as low-privilege callers or abnormal frequency
• Correlate /auth/info responses with downstream suspicious activity such as new admin account creation or role changes

Monitoring Recommendations

• Forward eladmin application logs and reverse proxy access logs to a centralized analytics platform for retention and querying
• Monitor for the eladmin product version banner to inventory instances running 2.7 or earlier
• Track authentication events alongside endpoint access to identify compromised or abused low-privilege accounts

How to Mitigate CVE-2025-9240

Immediate Actions Required

• Restrict network exposure of eladmin administrative interfaces to trusted management networks or VPN
• Audit accounts with access to the eladmin console and remove unused or over-provisioned low-privilege users
• Review access logs for prior requests to /auth/info from unexpected sources and investigate any matches

Patch Information

At the time of publication, the vendor had not released a fixed version addressing CVE-2025-9240. Monitor the elunez/eladmin GitHub repository and issue #885 for an upstream fix, and update as soon as a patched release is available.

Workarounds

• Place the eladmin application behind a reverse proxy that blocks or restricts access to /auth/info based on authenticated role
• Apply web application firewall rules that deny /auth/info requests from non-administrative source groups
• Reduce the sensitivity of data stored in user profiles until a vendor patch is applied

# Example nginx rule restricting /auth/info to a trusted admin subnet
location = /auth/info {
    allow 10.10.0.0/24;   # admin management subnet
    deny  all;
    proxy_pass http://eladmin_backend;
}