Vulnerability · Published Sep 2, 2026 · Assigned by VulnCheck

CVE-2026-82524UnoPim File Upload RCE via TinyMCE Image Upload Endpoint

High 7.2

In plain English

A high-severity unrestricted file upload in unopim from unopim. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)0.6%top 49.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

UnoPim before 2.1.5 contains an authenticated file upload vulnerability that allows authenticated administrators to upload arbitrary PHP files through the TinyMCE image upload endpoint due to missing file extension and MIME type validation. Attackers can upload a PHP web shell to the public storage disk and execute arbitrary operating system commands on the server by accessing the uploaded file at the URL returned in the server response.

Affected products (as reported)

Vendor	Product	Versions
unopim	unopim	0 – before 2.1.5

Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

Release Notes release-notes
Patch Commit patch
Researcher Blog technical-description, exploit
https://www.vulncheck.com/advisories/unopim-file-upload-rce-via-tinymce-image-upload-endpoint third-party-advisory