# CVE-2018-20062: ThinkPHP "noneCms" Remote Code Execution Vulnerability

Source: https://junglewise.ai/threats/cve-2018-20062-thinkphp-nonecms-remote-code-execution-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-11-03. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2018-20062 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2021-11-03

NoneCms V1.3, which utilizes ThinkPHP, contains a remote code execution vulnerability in thinkphp/library/think/App.php. Attackers can execute arbitrary PHP code by supplying a crafted filter parameter in a query string.

## Quick answers

**Is CVE-2018-20062 exploited in the wild?** Yes. CVE-2018-20062 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.

**How severe is CVE-2018-20062?** Critical severity, with a CVSS score of 9.8, published 3 November 2021.

**Which products and versions are affected?** 5none noneCms 1.3.0; ThinkPHP ThinkPHP 5.0.23.

**Is there a fix for CVE-2018-20062?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2018-20062 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2018-20062?** Check whether you run Thinkphp Nonecms. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- 5none noneCms 1.3.0
- ThinkPHP ThinkPHP 5.0.23

## Timeline

- 2018-12-11: disclosed: NVD Published Date
- 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2021-11-03: exploited: Reported as exploited in the wild per CISA KEV entry