CVE-2026-86305 Details
Description
A security flaw has been discovered in light0011 cms c774dce31c6df0055568a8d5c53d964d99be199d/f72cf46f601efb2a0618c3814cc2f61380b38930. Affected by this issue is the function Upload::upload of the file ThinkPHP/Library/Think/Upload.class.php. Performing a manipulation results in unrestricted upload. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. This product adopts a rolling release strategy to maintain continuous delivery. Therefore, version details for affected or updated releases cannot be specified. The project was informed of the problem early through an issue report but has not responded yet.
A vulnerability allowing unrestricted file uploads has been identified in Light0011 CMS, specifically in the upload function of the ThinkPHP library. This issue arises because the upload endpoint only specifies a destination directory while inheriting ThinkPHP's lenient default file handling. As a result, the application accepts arbitrary file types, extensions, MIME types, and sizes. The vulnerability can be exploited remotely, and public exploits are available.
To address this vulnerability, implement authentication and authorization for upload actions, restrict allowed file types and sizes, and store uploaded files outside of the executable web root. Additionally, configure the web server to prevent execution of uploaded files.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 7, 2026CISA-ADP
Assessed Sep 11, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/light0011/cms/ | [email protected] | ProductSource CodeVendor |
| https://github.com/light0011/cms/issues/9 | [email protected] | ExploitIssue TrackingRemedyTechnical DescriptionVendor |
| https://vuldb.com/cve/CVE-2026-86305 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/894804 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/399478 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/399478/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
| CWE-434 | Unrestricted Upload of File with Dangerous Type | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| light0011 cms | f72cf46f601efb2a0618c3814cc2f61380b38930 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 11, 2026 | CVE Modified | CISA-ADP |
| Sep 7, 2026 | New CVE Received | [email protected] |