CVE-2020-36705

Adning Advertising <= 1.5.5 - Arbitrary File Upload

9.8 Critical

The Adning Advertising plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the _ning_upload_image function in versions up to, and including, 1.5.5. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

6.89%Up 6.7 points since Jun 8, 2023

What each source reports

CVE List Score used 9.8

Adning Advertising <= 1.5.5 - Arbitrary File Upload

Record: CVE-2020-36705
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

EUVDEUVD-2020-24147 9.8

Record: EUVD-2020-24147
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-mjvv-fcgj-hpr2 9.8

The Adning Advertising plugin for WordPress is vulnerable to arbitrary file uploads due to...

Record: GHSA-mjvv-fcgj-hpr2
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

NVD 9.8

Record: CVE-2020-36705
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-434
Updated: 2026-11-02

Affected products

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Nuclei	Adning Advertising <= 1.5.5 - Arbitrary File Upload

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, Nuclei, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-36705 is a critical vulnerability (CVSS 9.8) in Tunafish Adning Advertising, published June 7, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.89%, the 94th percentile. No source names a fixed version.