# CVE-2026-82524 — unopim

> As of 2026-09-03, CVE-2026-82524 is a HIGH-severity vulnerability in unopim, CVSS v3.1 7.2, EPSS 0.3% (27.4th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-82524 as of 2026-09-03; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-09-03

## What is CVE-2026-82524?

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.

The record classifies CVE-2026-82524 under weakness class [CWE-434](https://intel.threadlinqs.com/cwe/CWE-434). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs high-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 33 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.2 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **CVSS v4.0 base score:** 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **EPSS (FIRST):** 0.3% probability of exploitation in the next 30 days, higher than 27.4% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-09-02, last modified 2026-09-03

## Is CVE-2026-82524 being exploited?

It currently carries a trending score of 36 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **unopim**: unopim

## How to fix CVE-2026-82524

No vendor patch reference has been recorded for CVE-2026-82524 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-82524

No threat campaign in the Threadlinqs corpus currently references CVE-2026-82524, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, GitHub Security Advisories, FIRST EPSS. Last verified by Threadlinqs on 2026-09-04. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com — release notes](https://github.com/unopim/unopim/releases/tag/v2.1.5)
- [github.com — patch](https://github.com/unopim/unopim/commit/675dfb5155a87f94c5ac861545a31b8f6ea44f5b)

**Exploit and proof of concept**

- [ashutosh-jena.in — technical description](https://ashutosh-jena.in/blog/remote-code-execution-rce-via-unrestricted-file-upload-in-unopim-v214)

**Third-party advisory**

- [vulncheck.com — third party advisory](https://www.vulncheck.com/advisories/unopim-file-upload-rce-via-tinymce-image-upload-endpoint)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-82524
Full detection coverage and IOCs for threats exploiting CVE-2026-82524 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp