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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Schule111
  • Schule School Management System

Configuration 1 [-]

cpe:2.3:a:schule111:schule_school_management_system:1.0.0:*:*:*:*:*:*:*

No data.

References
Link Providers
https://github.com/schule111/Schule/commit/cd53abbea93943f2c60a5281d45bebadc57636b7 cve-icon cve-icon
https://github.com/schule111/Schule/security/advisories/GHSA-6c48-67xx-vqgc cve-icon cve-icon
History

Fri, 05 Sep 2025 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Schule111
Schule111 schule School Management System
CPEs cpe:2.3:a:schule111:schule_school_management_system:1.0.0:*:*:*:*:*:*:*
Vendors & Products Schule111
Schule111 schule School Management System
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L'}

Fri, 23 May 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 22 May 2025 20:45:00 +0000

Type Values Removed Values Added
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.
Title Schule Has Insecure OTP Length, is Susceptible to Brute-Force Attacks
Weaknesses CWE-521
References
Metrics cvssV4_0

{'score': 6.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-05-23T13:56:37.894Z

Reserved: 2025-05-19T15:46:00.395Z

Link: CVE-2025-48372

cve-icon Vulnrichment

Updated: 2025-05-23T13:56:31.257Z

cve-icon NVD

Status : Analyzed

Published: 2025-05-22T21:15:36.640

Modified: 2025-09-05T14:15:28.703

Link: CVE-2025-48372

cve-icon Redhat

No data.