CVE-2026-24673 Open eClass Has File Upload Filter Bypass via ZIP Archive Extraction
Attackers can bypass file upload restrictions by embedding malicious files in ZIP archives, potentially leading to remote code execution on the Open eClass platform.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-24673?
CVE-2026-24673 is a medium-severity vulnerability in gunet openeclass, published on 3 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a file upload validation bypass vulnerability allows attackers to upload files with prohibited extensions by embedding them inside ZIP archives and extracting them using the application’s built-in decompression functionality. This issue has been patched in version 4.2.
Weakness: CWE-434
Which versions are affected by CVE-2026-24673?
It affects 1 product.
Products include Gunet Open Eclass Platform.
How do I fix CVE-2026-24673?
No fix has been published for CVE-2026-24673 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-24673 being exploited?
There is no known exploitation of CVE-2026-24673 in the wild and no public exploit code.
Other vulnerabilities in gunet openeclass
- CVE-2020-37113 GUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension Bypass
- CVE-2020-37116 GUnet OpenEclass 1.7.3 E-learning platform - phpMyAdmin Remote Access
- CVE-2026-24665 Open eClass is Vulnerable to Stored Cross-Site Scripting (XSS) via Student Assignment Upload
- CVE-2026-24669 Open eClass Insecure Password Reset Token Reuse Enables Account Takeover
- CVE-2026-24773 Open eClass Unauthenticated IDOR Allows Access to Arbitrary User Files
Sources
Also known as GHSA-3g4j-56gp-v6wv.