CVE-2026-93462

Deferred Deferred - Pending Action

Missing Authentication in baserCMS Exposes Sensitive Data

Publication date: 2026-09-30

Last updated on: 2026-10-01

Assigner: JPCERT/CC

Description

A missing authentication for critical function vulnerability exists in baserCMS. If this vulnerability is exploited, a remote attacker may obtain sensitive information.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-30

Last Modified

2026-10-01

Generated

2026-10-19

AI Q&A

2026-09-30

EPSS Evaluated

2026-10-18

NVD

CVE-2026-93462

EUVD

EUVD-2026-89673

Affected Vendors & Products

Vendor	Product	Version / Range
basercms	basercms	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

Executive Summary

This vulnerability in baserCMS is a missing authentication for critical function issue. It allows remote unauthenticated attackers to potentially access sensitive information due to the lack of required authentication for certain functions.

Detection Guidance

To detect this vulnerability, check if your baserCMS version is 5.0.0 to 5.4.0. Inspect network traffic for unauthenticated access attempts to critical functions. Review server logs for unusual requests targeting sensitive endpoints.

Impact Analysis

An attacker could exploit this to obtain sensitive information from the system. Since no authentication is required, the attack can be performed remotely without any user interaction.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, which may violate compliance requirements under GDPR, HIPAA, or other regulations that mandate strict access controls and data protection measures.

Mitigation Strategies

Immediately update baserCMS to version 5.4.1 or later. If using the 5.3 series, update to 5.3.1 or later. Restrict admin panel access to trusted users only. Monitor for suspicious activity post-update.

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