CVE-2026-86179: Daily Expense Manager Information Disclosure

CVE-2026-86179 Overview

CVE-2026-86179 is an information disclosure vulnerability affecting code-projects Daily Expense Manager 1.0. The flaw resides in the Database Backup Handler component, specifically the exposed SQL file at /Daily-Expense-Manager/exp_ak.sql. An unauthenticated remote attacker can retrieve the file over the network and read database contents without any user interaction. The issue is classified under [CWE-200] (Exposure of Sensitive Information to an Unauthorized Actor). A public exploit has been published, increasing the likelihood of opportunistic scanning.

Critical Impact
Remote, unauthenticated attackers can download the application's SQL backup file and extract sensitive database contents, including potentially stored credentials and financial records.

Affected Products

code-projects Daily Expense Manager 1.0
Component: Database Backup Handler (/Daily-Expense-Manager/exp_ak.sql)
Deployments exposing the application root directory over HTTP/HTTPS

Discovery Timeline

2026-09-06 - CVE-2026-86179 published to NVD
2026-09-08 - Last updated in NVD database

Technical Details for CVE-2026-86179

Vulnerability Analysis

The Daily Expense Manager application ships with a database backup file stored inside its web-accessible directory. The web server serves exp_ak.sql as a static resource because no access control, authentication check, or .htaccess restriction protects it. Any client that issues an HTTP GET request to the known path receives the raw SQL dump. The dump typically contains schema definitions, expense records, and user records, which can include password hashes or plaintext credentials depending on the installation. See the GitHub CVE Analysis Document for the researcher's write-up.

Root Cause

The root cause is an insecure deployment pattern in which a backup artifact resides inside the document root. The application does not move the SQL dump outside the web-served directory, nor does it restrict access by file extension. This maps directly to [CWE-200], where sensitive resources become reachable by unauthorized actors.

Attack Vector

Exploitation requires only network access to the web server hosting the application. An attacker enumerates the target, requests the known static path /Daily-Expense-Manager/exp_ak.sql, and receives the complete SQL backup in the response body. No credentials, session, or user interaction are required. Automated scanners can identify vulnerable hosts by fingerprinting the application and probing for the fixed filename.

Detection Methods for CVE-2026-86179

Indicators of Compromise

HTTP GET requests to /Daily-Expense-Manager/exp_ak.sql returning HTTP 200 with a Content-Type of application/sql, application/octet-stream, or text/plain.
Web server access logs showing large-byte responses for .sql files from external IP addresses.
Requests to the path from known scanning infrastructure or Tor exit nodes.

Detection Strategies

Deploy web server or WAF rules that alert on any request for URIs ending in .sql, .bak, .dump, or .old within the application document root.
Correlate outbound data volume from the web tier with requests to static backup artifacts to identify bulk exfiltration.
Perform authenticated file-system scans of web roots to inventory .sql files and flag any that are network-reachable.

Monitoring Recommendations

Enable verbose access logging on the web server and forward logs to a centralized analytics platform for retention and query.
Add a synthetic monitor that periodically requests the vulnerable path from an external vantage point and alerts on any non-404 response.
Track database credential usage after suspected exposure to detect follow-on authenticated access attempts.

How to Mitigate CVE-2026-86179

Immediate Actions Required

Remove exp_ak.sql and any other database backup files from the web-accessible directory immediately.
Rotate all database credentials, application secrets, and any user passwords that may have been present in the exposed dump.
Review web server access logs for prior successful requests to /Daily-Expense-Manager/exp_ak.sql and treat matches as confirmed data exposure.

Patch Information

No vendor patch is referenced in the advisory sources. Consult the VulDB CVE-2026-86179 entry and the Code Projects Resource Hub for any updates from the project maintainer. Until a fixed release is published, operators must apply configuration-level mitigations.

Workarounds

Move all SQL dumps and backup artifacts outside the web root to a directory the web server does not serve.
Configure the web server to deny requests for .sql, .bak, .dump, .old, and similar extensions with an explicit 403 response.
Restrict access to administrative and backup paths by source IP address or place them behind authentication.
Run periodic content scans of the document root to detect newly created backup files before they are indexed.

bash

# Apache: block direct access to SQL and backup files in the document root
<FilesMatch "\.(sql|bak|dump|old|sql\.gz)$">
    Require all denied
</FilesMatch>

# Nginx equivalent
location ~* \.(sql|bak|dump|old|sql\.gz)$ {
    deny all;
    return 403;
}