light0011 cms Upload.class.php Upload::upload unrestricted upload

Summaryinfo

A vulnerability, which was classified as critical, was found in light0011 cms c774dce31c6df0055568a8d5c53d964d99be199d/f72cf46f601efb2a0618c3814cc2f61380b38930. This affects the function Upload::upload of the file ThinkPHP/Library/Think/Upload.class.php. Executing a manipulation can lead to unrestricted upload. This vulnerability appears as CVE-2026-86305. The attack may be performed from remote. In addition, an exploit is available. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability has been found in light0011 cms c774dce31c6df0055568a8d5c53d964d99be199d/f72cf46f601efb2a0618c3814cc2f61380b38930 and classified as critical. This vulnerability affects the function Upload::upload of the file ThinkPHP/Library/Think/Upload.class.php. 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 advisory is available at github.com. This vulnerability was named CVE-2026-86305. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. This vulnerability is assigned to T1608.002 by the MITRE ATT&CK project.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet. By approaching the search of inurl:ThinkPHP/Library/Think/Upload.class.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Content Management System

Vendor

• light0011

Name

• cms

Version

• c774dce31c6df0055568a8d5c53d964d99be199d
• f72cf46f601efb2a0618c3814cc2f61380b38930

Website

• Product: https://github.com/light0011/cms/

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• 🔒

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Submitinfo

Accepted

• Submit #894804: light0011 cms f72cf46f601efb2a0618c3814cc2f61380b38930 Unrestricted Upload (by JiuZer0)

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