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CVE-2026-24380: Medium Vulnerability in Metagauss EventPrime

A missing authorization vulnerability exists in Metagauss EventPrime event calendar management, allowing exploitation of incorrectly configured access control. Immediate action is required, as this affects versions up to 4.2.8.0.

MEDIUMCVSS 5.3 · Published January 22, 2026

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A missing authorization vulnerability exists in Metagauss EventPrime event calendar management. This vulnerability allows exploiting incorrectly configured access control security levels. The issue affects EventPrime versions up to 4.2.8.0. With a CVSS score of 5.3, this vulnerability is classified as medium severity and presents a notable risk to organizations using affected versions.

Risk to organizations includes potential unauthorized access to sensitive features and data, which may lead to further exploitation of the system. As of now, this vulnerability is deferred, suggesting that further investigation or remediation may be necessary.

Organizations should prioritize patching immediately to mitigate the risk posed by this vulnerability. Given its medium severity, it is crucial to monitor the situation and apply updates as they become available.

Currently, there is no known exploit or public proof of concept available for this vulnerability, which indicates that while it poses a risk, the likelihood of immediate exploitation may be limited.

Vulnerability Details

The official CVE description states that this vulnerability allows exploiting incorrectly configured access control security levels in Metagauss EventPrime event calendar management. This issue affects EventPrime: from n/a through <= 4.2.8.0. The vulnerability is classified under CWE-862 (Missing Authorization).

The CVSS score is 5.3, indicating a medium severity. This is due to the attack vector being network-based, with low attack complexity, no privileges required, and no user interaction necessary. The confidentiality impact is low, with no integrity or availability impact.

Technical Analysis

The root cause of this vulnerability lies in the misconfiguration of access control mechanisms within the EventPrime plugin. Attackers may leverage this misconfiguration to gain unauthorized access to features that should be protected.

The attack vector is network-based, and the attack complexity is low, meaning an attacker could exploit this vulnerability with minimal effort. There are no privileges required, and no user interaction is necessary for an attack to succeed.

The impact of this vulnerability is primarily on confidentiality, as attackers could potentially access restricted data. However, the integrity and availability of the system are not directly affected.

Risk & Impact Analysis

Real-world deployment risk is significant, particularly for organizations relying on EventPrime for event management. The potential for unauthorized access to sensitive features could lead to data breaches or compliance violations.

This vulnerability matters to organizations using the affected version, as it increases the blast radius for potential attacks. Organizations should assess their exposure and prioritize remediation accordingly.

Given the CVSS score of 5.3 and the deferred status of the vulnerability, organizations should schedule remediation in their patch cycle. Monitoring for updates and further advisories is essential.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

This vulnerability affects all versions of EventPrime from n/a through <= 4.2.8.0. Organizations using these versions should take immediate action to update and mitigate potential risks.

Mitigation & Remediation

Organizations should apply patches or updates to EventPrime as soon as they are available. If an update is not yet available, consider implementing workarounds such as restricting access to critical features based on role or user authentication.

Configuration hardening is also recommended to ensure that access controls are properly enforced. Additionally, implementing network controls can help mitigate exposure until a patch is applied.

Monitoring for unusual access patterns or behavior changes within the EventPrime application can provide early warning of potential exploitation attempts.

Detection Guidance

Organizations should monitor logs for indicators of unauthorized access attempts, especially for features that should be restricted. Behavioral anomalies, such as unexpected user activity or changes in access patterns, should also be flagged for further investigation.

Network signatures indicating attempts to exploit this vulnerability or similar access control weaknesses should be established. Additionally, monitoring system changes can help identify any unauthorized modifications.

AppSecure Threat Intelligence Insight

The long-term significance of CVE-2026-24380 lies in its representation of common access control misconfigurations in web applications. Security teams should take this opportunity to review their access control implementations across all applications.

This vulnerability highlights the necessity for regular security assessments and penetration testing, particularly focusing on access control mechanisms.

For more insights, consider reviewing our guides on vulnerability management programs and penetration testing methodology to enhance your security posture.

Moreover, understanding the failure of traditional security measures is essential to protect against future vulnerabilities similar to CVE-2026-24380.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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