Open eClass security vulnerabilities

Open eClass is an open-source e-classroom system developed by the Greek Universities Network. Versions of Open eClass prior to 4.2 contained security vulnerabilities; these vulnerabilities stemmed from username enumeration, which could lead to the identification of valid user accounts...

PT-2026-6210

Name of the Vulnerable Software and Affected Versions Open eClass versions prior to 4.2 Description The Open eClass platform, previously known as GUnet eClass, is a course management system. A flaw in the system’s logic allows authenticated students to incorrectly record their attendance in...

CVE-2026-24670: Improper Access Control

The Open eClass platform formerly known as GUnet eClass is a complete course management system. Prior to version 4.2, a broken access control vulnerability allows authenticated students to create new course units, an action normally restricted to higher-privileged roles. This issue has been patch...

CVE-2026-24774: Improper Enforcement of Behavioral Workflow

The Open eClass platform formerly known as GUnet eClass is a complete course management system. Prior to version 4.2, a business logic vulnerability allows authenticated students to improperly mark themselves as present in attendance activities, including activities that have already expired, by...

PT-2026-6197

Name of the Vulnerable Software and Affected Versions Open eClass versions prior to 4.2 Description The Open eClass platform, previously known as GUnet eClass, is a course management system. A stored Cross-Site Scripting XSS issue exists in versions before 4.2, enabling authenticated students to...

PT-2026-6199

Name of the Vulnerable Software and Affected Versions Open eClass versions prior to 4.2 Description The Open eClass platform, previously known as GUnet eClass, is a course management system. A flaw exists where active user sessions are not invalidated after a password change. This allows existing...

Open eClass security vulnerabilities

Open eClass is an open-source e-classroom system developed by the Greek Universities Network. Versions of Open eClass prior to 4.2 contained security vulnerabilities. These vulnerabilities were caused by insecure direct object references, which could allow unauthenticated remote attackers to acce...

Open eClass Cross-Site Script Vulnerabilities

Open eClass is an open-source e-classroom system developed by the Greek Universities Network. Versions of Open eClass prior to 4.2 contained a cross-site scripting vulnerability. This vulnerability stemmed from stored cross-site scripts in multiple user-controllable input fields, which could allo...

PT-2026-6202

Name of the Vulnerable Software and Affected Versions Open eClass versions prior to 4.2 Description The Open eClass platform, previously known as GUnet eClass, is a course management system. A broken access control issue permits authenticated students to create new course units, a function...

PT-2026-6196

Name of the Vulnerable Software and Affected Versions Open eClass versions prior to 4.2 Description The Open eClass platform, previously known as GUnet eClass, is a course management system susceptible to a username enumeration issue. An unauthenticated attacker can determine valid user accounts ...

PT-2026-6203

Name of the Vulnerable Software and Affected Versions Open eClass versions prior to 4.2 Description The Open eClass platform, previously known as GUnet eClass, is a course management system. A Stored Cross-Site Scripting XSS issue exists in versions before 4.2, allowing authenticated...

PT-2026-6206

Name of the Vulnerable Software and Affected Versions Open eClass versions prior to 4.2 Description The Open eClass platform, previously known as GUnet eClass, is a course management system. A Reflected Cross-Site Scripting XSS issue exists in versions prior to 4.2, potentially allowing remote...

PT-2026-6198

Name of the Vulnerable Software and Affected Versions Open eClass versions prior to 4.2 Description The Open eClass platform, previously known as GUnet eClass, is a course management system. A Cross-Site Request Forgery CSRF issue exists in teacher-restricted endpoints prior to version 4.2. This...

PT-2026-6209

Name of the Vulnerable Software and Affected Versions Open eClass versions prior to 4.2 Description The Open eClass platform, previously known as GUnet eClass, is a course management system. A security issue exists where an unauthenticated remote attacker can access personal files belonging to...

Open eClass code issues and vulnerabilities

Open eClass is an open-source e-classroom system developed by the Greek Universities Network. Versions of Open eClass prior to 4.2 contained code vulnerabilities. These vulnerabilities stemmed from an insecure password reset mechanism, which could allow local attackers to reuse already used...

Open eClass code issues and vulnerabilities

Open eClass is an open-source e-classroom system developed by the Greek Universities Network. Versions of Open eClass prior to 4.2 had code vulnerabilities; these vulnerabilities stemmed from a bypass in file upload validation, allowing attackers to upload files with prohibited extensions using Z...

Open eClass code issues and vulnerabilities

Open eClass is an open-source e-classroom system developed by the Greek Universities Network. Versions of Open eClass prior to 4.2 contained code vulnerabilities. These vulnerabilities stemmed from the failure to invalidate active user sessions after password changes, allowing unauthorized access...

PT-2026-6204

Name of the Vulnerable Software and Affected Versions Open eClass versions prior to 4.2 Description The Open eClass platform, previously known as GUnet eClass, a course management system, contains a Stored Cross-Site Scripting XSS issue. Authenticated students can inject malicious JavaScript into...

CVE-2026-24773: Authorization Bypass Through User-Controlled Key

The Open eClass platform formerly known as GUnet eClass is a complete course management system. Prior to version 4.2, an Insecure Direct Object Reference IDOR vulnerability allows unauthenticated remote attackers to access personal files of other users by directly requesting predictable user...

CVE-2026-24674: Improper Neutralization of Input During Web Page Generation

The Open eClass platform formerly known as GUnet eClass is a complete course management system. Prior to version 4.2, a Reflected Cross-Site Scripting XSS vulnerability allows remote attackers to execute arbitrary JavaScript in the context of authenticated users by crafting malicious URLs and...