CVE-2026-96739 Details
Description
A flaw has been found in SEMCMS up to 4.2. Affected by this issue is some unknown functionality of the file /Edit/php/upload_json.php of the component KindEditor Upload Interface. This manipulation of the argument imgFile causes cross site scripting. The attack may be initiated remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
A cross-site scripting (XSS) vulnerability has been identified in SEMCMS versions through 4.2. The issue arises in the KindEditor upload interface, specifically within the file '/Edit/php/upload_json.php'. This vulnerability allows remote attackers to upload HTML files without authentication. The uploaded files are stored in a web-accessible directory and, when accessed, execute JavaScript under the domain of the website. This could potentially be exploited to create fake pages, alter trusted content, read non-HttpOnly cookies, and send same-origin requests, particularly if the file is opened by a logged-in user or administrator.
To address this vulnerability, implement authentication and authorization checks on the upload interface. Restrict allowed file types to exclude HTML and other script-capable formats. Store uploaded files in a non-executable directory or serve them from a separate static domain, forcing download instead of rendering as text/html. Additionally, add Cross-Site Request Forgery (CSRF) protection by incorporating CSRF tokens and server-side permission checks for all upload and file management actions.
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 24, 2026CISA-ADP
Assessed Sep 24, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/CSDVi/cve/issues/7 | [email protected] | ExploitIssue TrackingRemedy |
| https://vuldb.com/cve/CVE-2026-96739 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/904124 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/409004 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/409004/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | [email protected] |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| SEMCMS | 4.2 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 24, 2026 | CVE Modified | CISA-ADP |
| Sep 24, 2026 | New CVE Received | [email protected] |