CVE-2026-86239: liufee FeehiCMS UEditor Widget UeditorAction.php init unrestricted upload

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-07 · updated 2026-09-28
Weakness: CWE-284

Description

A vulnerability was identified in liufee FeehiCMS up to 2.1.1. The impacted element is the function UeditorAction::init of the file backend/widgets/ueditor/UeditorAction.php of the component UEditor Widget. The manipulation leads to unrestricted upload. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

liufee FeehiCMS: 2.1.0, 2.1.1

References

https://github.com/liufee/cms/issues/94
https://github.com/yang5ynag/cve/blob/main/FEHI-001-UEditor-Unauthorized-File-Upload.md
https://vuldb.com/cve/CVE-2026-86239
https://vuldb.com/submit/901833
https://vuldb.com/vuln/399396
https://vuldb.com/vuln/399396/cti

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