What is the CVSS score of CVE-2026-24665?

CVE-2026-24665 has a CVSS 3.1 base score of 8.7 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of Open Eclass Platform are affected by CVE-2026-24665?

A HIGH severity vulnerability (CVE-2026-24665) affecting Open eClass course management systems has been publicly disclosed with active exploits available, but no patch currently exists.

Is there a public PoC exploit available for CVE-2026-24665?

Yes, a public proof-of-concept exploit is available for CVE-2026-24665. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-24665?

Within 24 hours: Inventory all Open eClass instances and verify affected versions; isolate or restrict network access to Open eClass systems from untrusted networks. Within 7 days: Deploy compensating controls (WAF rules blocking known exploit patterns, network segmentation, disable affected features if operationally feasible); implement enhanced monitoring and logging. Within 30 days: Monitor vendor communications for patch availability; prepare deployment plan; consider temporary alternative delivery methods if risk tolerance is exceeded.

Open Eclass Platform CVE-2026-24665

HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-02-03 security-advisories@github.com

XSS Open Eclass Platform

8.7

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

8.7 HIGH

AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 10, 2026 - 18:48 vuln.today

Public exploit code

CVE Published

Feb 03, 2026 - 18:16 nvd

HIGH 8.7

DescriptionGitHub Advisory

The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, a stored Cross-Site Scripting (XSS) vulnerability allows authenticated students to inject malicious JavaScript into uploaded assignment files, which is executed when instructors view the submission. This issue has been patched in version 4.2.

AnalysisAI

The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. [CVSS 8.7 HIGH]

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticated student uploads malicious JavaScript in assignment file

Exploit

Instructor views submission triggering file rendering

Execution

Malicious script executes in instructor's browser

Impact

Session hijacking or credential theft