CVE-2025-48372 - CVE House
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Status published Medium CVE-2025-48372

Schule Has Insecure OTP Length, is Susceptible to Brute-Force Attacks

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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CVE-2025-48373
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Medium 6.6

Affected Vendor

Affected Software

Schule
Vulnerable Versions:
< 1.0.1

Timeline

Official Publish: May 22nd, 2025
Last Modified: May 23rd, 2025
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-521

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.