CVE-2025-48372
High
Description
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.
SeverityHigh
CVSS7.3
Exploit probability—
ProductSchule111 Schule School Management System
PublishedMay 22, 2025
First seenMay 22, 2025
Weakness typeCWE-521CWE-521
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| schule111 schule_school_management_system | 1.0.0 | — |
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