VulnerabilityPublished 3 Feb 2026

CVE-2026-24672: gunet openeclass · Cross-site Scripting

Affects gunet openeclassSource CVE Database V5

Not known to be exploited · CVSS 7.3 High : upgrade to 4.2 soon.

Data as of 26 Oct 2026, 11:42 UTC

CVSS 3.1 base score

7.3High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 4.2

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 3 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade openeclass and gunet/openeclass to 4.2.

Affected software

Product	Affected	Fixed in
gunetopeneclass	Affected <4.2	Fixed in 4.2
GitHubgunet/openeclass`pkg:github/gunet/openeclass`Other threats	Affected <4.2	Fixed in 4.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Immediate upgrade of all Open eClass installations to version 4.2 or later, where the vulnerability is patched.
Implement strict input validation and output encoding on all user profile fields to prevent injection of malicious scripts.
Conduct regular security audits and code reviews focusing on input handling and sanitization in web applications.
Educate users and administrators about the risks of XSS and encourage cautious behavior when interacting with user-generated content.
Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers.
Monitor logs and user activities for unusual behavior that may indicate exploitation attempts.
Restrict profile editing permissions to trusted users where possible to reduce the risk of malicious input.
Ensure that multi-factor authentication is enabled to mitigate the impact of credential theft.
Maintain an incident response plan specifically addressing web application attacks like XSS.
Engage with the Open eClass community or vendor for timely updates and security advisories.

Description

CVE-2026-24672 is a high-severity Stored Cross-Site Scripting (XSS) vulnerability in the Open eClass platform versions prior to 4.2. Authenticated students can inject malicious JavaScript into user profile fields, which executes when other users with viewing privileges access the affected pages. This vulnerability can lead to the compromise of user confidentiality and integrity, such as session hijacking or unauthorized actions on behalf of users. The vulnerability requires authentication and user interaction (viewing the affected profile pages) but does not impact availability. The issue has been patched in version 4.2, and no known exploits are currently reported in the wild. European educational institutions using Open eClass versions below 4.2 are at risk, especially in countries with widespread adoption of this platform. Mitigation involves upgrading to version 4.

Impact

For European organizations, particularly educational institutions using Open eClass, this vulnerability can lead to significant data breaches and unauthorized access to sensitive information. Attackers exploiting this XSS flaw can hijack user sessions, steal credentials, or perform actions impersonating legitimate users, undermining the integrity of the learning management system. This can result in unauthorized access to course materials, student records, and potentially administrative functions. The confidentiality of personal data is at risk, which may lead to violations of GDPR regulations, resulting in legal and financial repercussions. While availability is not directly impacted, the trust and operational stability of the platform can be compromised, affecting the educational process. The requirement for authenticated access limits the attack surface but does not eliminate risk, as students typically have legitimate access. The vulnerability's presence in widely used versions prior to 4.2 means that institutions that have not updated are vulnerable. Given the increasing reliance on digital education platforms in Europe, the potential impact is substantial.

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #1OWASP Top 10 A05:2025: Injection (opens in a new tab)
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Architecture and Design · Libraries or Frameworks
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
Implementation · Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages.
Architecture and Design · Implementation · Attack Surface Reduction
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide…
OWASP Cheat Sheets
Cross Site Scripting Prevention (opens in a new tab)
DOM based XSS Prevention (opens in a new tab)
Injection Prevention (opens in a new tab)
Abuse Case (opens in a new tab)
Deserialization (opens in a new tab)
OWASP ASVS 4.0.3
V5.3.3 (opens in a new tab)
V1.5.1 (opens in a new tab)
Attack patterns
XSS Using MIME Type Mismatch (opens in a new tab)
DOM-Based XSS (opens in a new tab)
Reflected XSS (opens in a new tab)
Stored XSS (opens in a new tab)
Cross-Site Scripting (XSS) (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

github.com/gunet/openeclass/security/advisories/GHSA-3p2x-qgxw-qvxh (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 11 Feb 2026, 11:57 UTC

WeaknessesCWE-79

Technical details

References

Community reviews

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