CVE-2026-86240
CVE-2026-86240
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (32.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Weakness classification (CWE)
References
- vuldb.com/vuln/399397 (technical-description, vdb-entry)
- vuldb.com/vuln/399397/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-86240 (third-party-advisory)
- vuldb.com/submit/901834 (third-party-advisory)
- github.com/liufee/cms/issues/95 (issue-tracking)
- github.com/yang5ynag/cve/blob/main/FEHI-002-UEditor-catchImage-SSRF.md (exploit)
Frequently asked questions
- What is CVE-2026-86240?
- CVE-2026-86240 is a medium-severity vulnerability, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.7/10. Published 2026-09-07.
- How severe is CVE-2026-86240?
- Medium severity. CVSS v3 base score is 4.7 out of 10.