CVE-2018-20062

Name: CVE-2018-20062
Creator: NVD / NIST
Published: 2018-12-11T18:29:00.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 99.53%

Last modified Jun 17, 2026

CVE-2018-20062 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An issue was discovered in NoneCms V1.3. thinkphp/library/think/App.php allows remote attackers to execute arbitrary PHP code via crafted use of the filter parameter, as demonstrated by the s=index/\think\Request/input&filter=phpinfo&data=1 query string.. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.53% chance of exploitation in the next 30 days.

Description

An issue was discovered in NoneCms V1.3. thinkphp/library/think/App.php allows remote attackers to execute arbitrary PHP code via crafted use of the filter parameter, as demonstrated by the s=index/\think\Request/input&filter=phpinfo&data=1 query string.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

99.53%

99.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by May 3, 2022.

Affected Software

Vendor	Product	Versions
5none	Nonecms	1.3.0

References

http://packetstormsecurity.com/files/157218/ThinkPHP-5.0.23-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/nangge/noneCms/issues/21Exploit, Third Party Advisory
http://packetstormsecurity.com/files/157218/ThinkPHP-5.0.23-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/nangge/noneCms/issues/21Exploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-20062US Government Resource

Timeline

Published: Dec 11, 2018
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-20062?

How severe is CVE-2018-20062?

CVE-2018-20062 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 99.53% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2018-20062?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-20062?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST