schule111 Schule up to 1.0.0 One-Time Password generateOTP weak password

Summaryinfo

A vulnerability marked as critical has been reported in schule111 Schule up to 1.0.0. Affected by this vulnerability is the function generateOTP of the component One-Time Password Handler. The manipulation leads to weak password. This vulnerability is listed as CVE-2025-48372. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in schule111 Schule up to 1.0.0. It has been rated as problematic. This issue affects the function generateOTP of the component One-Time Password Handler. The manipulation with an unknown input leads to a weak password vulnerability. Using CWE to declare the problem leads to CWE-521. The product does not require that users should have strong passwords, which makes it easier for attackers to compromise user accounts. Impacted is confidentiality. The summary by CVE is:

Schule is open-source school management system software. The generateOTP() function generates a 4-digit numeric One-Time Password (OTP). Prior to version 1.0.1, even if a secure random number generator is used, the short length and limited range (1000–9999) results in only 9000 possible combinations. This small keyspace makes the OTP highly vulnerable to brute-force attacks, especially in the absence of strong rate-limiting or lockout mechanisms. Version 1.0.1 fixes the issue.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2025-48372 since 05/19/2025. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1552 for this issue.

Upgrading to version 1.0.1 eliminates this vulnerability. Applying the patch cd53abbea93943f2c60a5281d45bebadc57636b7 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• schule111

Name

• Schule

Version

• 1.0

License

• open-source

Website

• Product: https://github.com/schule111/Schule/

CPE 2.3info

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CPE 2.2info

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