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

Status: published. Published: 2026-09-02. Updated: 2026-11-08.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/unopim/unopim/commit/675dfb5155a87f94c5ac861545a31b8f6ea44f5b

## Affected products and versions

- unopim / unopim (unopim/unopim): ≥ 0; < 2.1.5 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.6 (high); 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; source: CNA: VulnCheck

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.63% as of 2026-11-08; percentile 50.29%

- SSVC: exploitation poc; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-434

## Exploit evidence

- exploit: https://ashutosh-jena.in/blog/remote-code-execution-rce-via-unrestricted-file-upload-in-unopim-v214 (CNA: VulnCheck)

## References

- https://github.com/unopim/unopim/releases/tag/v2.1.5 (CNA: VulnCheck; release-notes)

- https://github.com/unopim/unopim/commit/675dfb5155a87f94c5ac861545a31b8f6ea44f5b (CNA: VulnCheck; patch)

- https://ashutosh-jena.in/blog/remote-code-execution-rce-via-unrestricted-file-upload-in-unopim-v214 (CNA: VulnCheck; technical-description, exploit)

- https://www.vulncheck.com/advisories/unopim-file-upload-rce-via-tinymce-image-upload-endpoint (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-82524; retrieved 2026-11-08; source updated 2026-11-08

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-82524; retrieved 2026-11-08; source updated Not reported

Revision: 7f33604f87a5f2c379f505f8d30e2d3c65f59fd806197b029fdbe873684e40b5

Canonical: https://y2.dev/cve/CVE-2026-82524

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