CVE-2026-86240 Details
Description
A security flaw has been discovered in liufee FeehiCMS up to 2.1.1. This affects the function catchImage of the file backend/widgets/ueditor/Uploader.php of the component UEditor. The manipulation of the argument source[] results in server-side request forgery. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
A server-side request forgery (SSRF) vulnerability has been identified in FeehiCMS versions through 2.1.1. The issue arises in the UEditor component, specifically within the 'catchImage' function of 'backend/widgets/ueditor/Uploader.php'. The vulnerability allows an unauthenticated attacker to manipulate the 'source[]' argument, bypassing IP address validation and sending requests to the server's loopback interface. This could lead to internal port scanning, access to internal services, and potentially exploitation of cloud metadata endpoints.
To address this vulnerability, the IP validation should be updated to use 'FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE', which would block loopback and link-local addresses. Additionally, an explicit blacklist for 127.0.0.0/8 and 169.254.0.0/16 should be implemented, 'assets/*' should be removed from the allowActions whitelist, and requests should be restricted to standard ports 80 and 443.
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 8, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/liufee/cms/issues/95 | [email protected] | Issue TrackingTechnical DescriptionVendor |
| https://github.com/yang5ynag/cve/blob/main/FEHI-002-UEditor-catchImage-SSRF.md | [email protected] | ExploitTechnical Analysis |
| https://vuldb.com/cve/CVE-2026-86240 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/901834 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/399397 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/399397/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| liufee FeehiCMS | <= 2.1.1 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 8, 2026 | CVE Modified | CISA-ADP |
| Sep 7, 2026 | New CVE Received | [email protected] |