CVE-2026-102247: FastAdmin Privilege Escalation Vulnerability

CVE-2026-102247 Overview

CVE-2026-102247 is a vulnerability in FastAdmin versions 1.6.1.20250430 and 1.6.5.20260602. The flaw resides in an unknown function within application/database.php, part of the Database Management component. The weakness maps to [CWE-250: Execution with Unnecessary Privileges], allowing an authenticated remote attacker to abuse elevated permissions through the affected code path. Public disclosure of exploit details has occurred, increasing the likelihood of opportunistic targeting.

Critical Impact
An authenticated remote attacker can trigger code paths that run with unnecessary privileges, resulting in high impact to confidentiality, integrity, and availability of the FastAdmin instance.

Affected Products

FastAdmin 1.6.1.20250430
FastAdmin 1.6.5.20260602
Component: Database Management (application/database.php)

Discovery Timeline

2026-09-29 - CVE-2026-102247 published to the National Vulnerability Database
2026-09-29 - Last updated in NVD database

Technical Details for CVE-2026-102247

Vulnerability Analysis

The vulnerability lives in application/database.php, a file that handles Database Management operations inside FastAdmin. The affected function executes actions with more privileges than needed to perform its task, matching the pattern described by [CWE-250]. An attacker who reaches this code path can leverage the excess privilege to influence database-level operations exposed by the component.

Exploitation requires network access to the application and prior authentication with high privileges, and it involves a user-interaction step. Because the public exploit is available, defenders should assume that opportunistic attempts will follow disclosure.

Root Cause

The root cause is a design decision in application/database.php where a handler runs with broader privileges than required. When the handler performs a database management action, the elevated context is inherited by operations that should have executed under a restricted principal. This violates the principle of least privilege and turns a scoped administrative feature into a lever for broader impact.

Attack Vector

The attack vector is remote and requires an authenticated session with elevated rights, along with an action from the victim user. The attacker interacts with the vulnerable endpoint that invokes the affected function in application/database.php. Because the code path runs with unnecessary privileges, the attacker gains high impact on the confidentiality, integrity, and availability of application data. No verified proof-of-concept code is included here; refer to the VulDB entry for CVE-2026-102247 and the GitHub issue discussion for technical details.

Detection Methods for CVE-2026-102247

Indicators of Compromise

Unexpected write, drop, or schema-modification operations issued by the FastAdmin service account against production databases.
HTTP requests targeting endpoints backed by application/database.php from authenticated administrative sessions at unusual times.
New or modified database users, roles, or grants created shortly after requests to the Database Management component.

Detection Strategies

Baseline the normal set of operations invoked through the FastAdmin Database Management module and alert on deviations, especially privileged SQL statements outside maintenance windows.
Correlate web server access logs referencing database.php with database audit logs to detect privileged actions that originated from the vulnerable handler.
Monitor administrative account usage for session anomalies such as new source IP ranges or user-agent changes preceding database management activity.

Monitoring Recommendations

Enable database audit logging for DDL and privilege-modification events on databases reachable from the FastAdmin service account.
Forward FastAdmin application logs, web server logs, and database audit logs to a centralized SIEM for cross-source correlation.
Track failed and successful authentications to administrative FastAdmin roles and alert on unusual geographic or temporal patterns.

How to Mitigate CVE-2026-102247

Immediate Actions Required

Restrict network access to the FastAdmin administrative interface using firewall rules, VPN, or IP allowlists until a patch is applied.
Rotate credentials for any FastAdmin administrative account that may have been exposed and enforce multi-factor authentication where supported.
Reduce the privileges of the database account used by FastAdmin to the minimum required for normal operation.

Patch Information

No vendor patch reference is listed in the NVD entry at publication time. Monitor the VulDB CVE overview and the upstream FastAdmin project for a fixed release, and apply the vendor update as soon as it becomes available.

Workarounds

Disable or remove access to the Database Management component in application/database.php if it is not required for daily operations.
Segment the FastAdmin host from sensitive database servers using network access controls so that abuse of the vulnerable handler cannot reach critical data stores.
Review and tighten role-based access control so that only a small, audited set of accounts can reach the Database Management routes.

bash

# Example: restrict access to the FastAdmin admin path at the reverse proxy
# nginx configuration snippet
location ~* /admin/database\.php$ {
    allow 10.10.0.0/24;   # trusted admin subnet
    deny  all;
    proxy_pass http://fastadmin_upstream;
}