What’s Vulnerable › Vulnerabilities

CVE-2025-48373: Schule Has Client-Side Role-Based Access Control (RBAC) Bypass Vulnerability

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-22 · updated 2026-06-17
• Weakness: CWE-863

Description

Schule is open-source school management system software. The application relies on client-side JavaScript (index.js) to redirect users to different panels based on their role. Prior to version 1.0.1, this implementation poses a serious security risk because it assumes that the value of data.role is trustworthy on the client side. Attackers can manipulate JavaScript in the browser (e.g., via browser dev tools or intercepting API responses) and set data.role to any arbitrary value (e.g., "admin"), gaining unauthorized access to restricted areas of the application.

Affected products

• schule111 Schule: 1.0.0

References

• https://github.com/schule111/Schule/commit/cbf7f509c37acd69b4ab8ee19d842de867b46b7e
• https://github.com/schule111/Schule/security/advisories/GHSA-37h9-qq7c-6mc9

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