CVE-2026-82699: Student Management System Data Exposure Flaw

CVE-2026-82699 Overview

CVE-2026-82699 is a cleartext storage vulnerability in the sambitraj Student Management System, an open-source PHP/MySQL application hosted on GitHub. The flaw resides in the password handling logic tied to the aca.sql database file, where user passwords are persisted without hashing or encryption. An authenticated remote attacker with high privileges can read stored credentials in cleartext. The weakness is classified under [CWE-310: Cryptographic Issues]. The project follows a rolling release model, so no discrete affected version numbers are published. A public exploit reference exists via VulDB and a corresponding GitHub issue.

Critical Impact

Passwords are stored in cleartext within the application database, enabling credential harvesting and account takeover if the database is accessed by a privileged user or exposed.

Affected Products

• sambitraj Student Management System (rolling release up to commit 56ba287f2e9031523ccb4244cb6e3fe530e4e5d5)
• Component: Password Handler using aca.sql
• No fixed version identifier is available due to the rolling release model

Discovery Timeline

• 2026-08-31 - CVE-2026-82699 published to NVD
• 2026-08-31 - Last updated in NVD database

Technical Details for CVE-2026-82699

Vulnerability Analysis

The Student Management System stores account passwords as plaintext in the underlying MySQL schema defined by aca.sql. When users register or update credentials, the application writes the raw Password argument directly into the database without applying a one-way hash function such as bcrypt, Argon2, or PBKDF2. Any actor who reaches the database, through backup exposure, SQL injection, misconfigured access, or legitimate administrative access, can read every credential in the system. Because users commonly reuse passwords, the disclosure impact extends beyond this application to other services those users authenticate against.

Root Cause

The root cause is missing cryptographic protection of stored authenticator material [CWE-310]. The password field is declared and populated as a plain string column, and the application logic omits any hashing step during account creation, password reset, or login validation. Login comparison is performed against the cleartext value, which enforces the insecure storage pattern throughout the codebase.

Attack Vector

Exploitation requires network reachability and high privileges within the application or database context. An attacker with database read access, a privileged administrative account, or access to a database backup can enumerate the users table and retrieve every stored password directly. The exploit has been publicly documented in the project's GitHub issue tracker and referenced by VulDB CVE Details.

No verified proof-of-concept code is published beyond the reference disclosure. See the GitHub Issue Report for technical details on the affected password handling behavior.

Detection Methods for CVE-2026-82699

Indicators of Compromise

• Presence of readable plaintext values in the password column of the application database
• Database dumps or backups containing cleartext credentials in exported aca.sql artifacts
• Unexpected SELECT queries targeting the users table from non-administrative sessions

Detection Strategies

• Perform a schema and data audit on the application database to confirm whether password columns contain plaintext strings rather than hash-formatted values
• Review application source code for calls that insert or update the Password field without invoking password_hash() or an equivalent primitive
• Monitor web server and database logs for authentication flows that transmit or persist raw password values

Monitoring Recommendations

• Alert on outbound transfers or downloads of aca.sql or full database dumps from the application host
• Track administrative logins and privileged database sessions that access the users table outside routine maintenance windows
• Enable file integrity monitoring on aca.sql and related PHP files that implement authentication logic

How to Mitigate CVE-2026-82699

Immediate Actions Required

• Force a password reset for every account after deploying a fix that hashes stored credentials
• Restrict database access to the minimum set of service accounts and rotate database credentials
• Remove any cleartext database backups from shared storage and audit prior exposure

Patch Information

No vendor-supplied patch is referenced in the CVE record. Because the project uses a rolling release, remediation requires code-level changes: replace direct storage of the Password argument with a modern hashing function such as password_hash($password, PASSWORD_BCRYPT) and validate logins with password_verify(). Track upstream commits after 56ba287f2e9031523ccb4244cb6e3fe530e4e5d5 on the project repository for community-supplied fixes.

Workarounds

• Isolate the application behind authenticated network segments and disable public exposure until code fixes are in place
• Encrypt database backups at rest and enforce access controls on backup storage
• Apply application-layer input validation and rate limiting to reduce credential-abuse risk while the underlying storage issue is remediated

# Example remediation snippet for PHP password handling
# Replace plaintext insert with a hashed value
$hash = password_hash($_POST['Password'], PASSWORD_BCRYPT);
# INSERT INTO users (username, password) VALUES (?, ?)  -- bind $hash
# Validate at login using password_verify($_POST['Password'], $storedHash)