Wavelog up to 2.4.1 Installation core_class.php write_config code injection

Summaryinfo

A vulnerability classified as critical has been found in Wavelog up to 2.4.1. This affects the function write_config of the file install/includes/core/core_class.php of the component Installation. This manipulation causes code injection. This vulnerability is registered as CVE-2026-54237. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Wavelog up to 2.4.1. Affected by this vulnerability is the function write_config of the file install/includes/core/core_class.php of the component Installation. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Wavelog is web-based amateur radio logging software. From 1.8 until 2.4.2, Wavelog exposes /install/ajax.php and /install/includes/interface_assets/triggers.php after installation without an installation lock or permission check. Unsanitized input reaches write_config() and write_configfile() in install/includes/core/core_class.php, allowing a remote unauthenticated attacker to read or write log files and place attacker-controlled content into PHP configuration files. The resulting PHP configuration content can execute on the server. This issue is fixed in version 2.4.2.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-54237 since 06/12/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

By approaching the search of inurl:install/includes/core/core_class.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.4.2 eliminates this vulnerability.

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Productinfo

Name

• Wavelog

Version

• 2.4.0
• 2.4.1

Website

• Product: https://github.com/wavelog/wavelog/

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