OpenCATS up to 0.9.x Import ImportUI.php unrestricted upload

Summaryinfo

A vulnerability marked as critical has been reported in OpenCATS up to 0.9.x. This affects an unknown function of the file modules/import/ImportUI.php of the component Import Module. This manipulation causes unrestricted upload. The identification of this vulnerability is CVE-2026-54454. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in OpenCATS up to 0.9.x. Affected by this vulnerability is an unknown code of the file modules/import/ImportUI.php of the component Import Module. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

OpenCATS is an open-source applicant tracking system and recruitment CRM for staffing agencies and hiring teams. Prior to 0.10.0, the OpenCATS Import module in modules/import/ImportUI.php can preserve an uploaded file's original name for one import data type and place the file in the web-accessible temporary directory. An authenticated user with Import privileges can select the affected import path and upload a PHP file that remains under an attacker-controlled executable filename, and an import error can leave the file on disk. If the temporary directory is served with PHP execution enabled, requesting the staged file can execute arbitrary PHP code with the web server process privileges, exposing or modifying recruiting data and the host system. This issue is fixed in version 0.10.0.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-54454 since 06/15/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

By approaching the search of inurl:modules/import/ImportUI.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 0.10.0 eliminates this vulnerability.

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Productinfo

Name

• OpenCATS

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9

Website

• Product: https://github.com/opencats/OpenCATS/

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