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CVE-2018-20062

ThinkPHP "noneCms" Remote Code Execution

9.8 CRITICALActively exploited (CISA KEV)Public exploitEPSS 99.5%
  1. Published11 Dec 2018
  2. Added to CISA KEV3 Nov 2021
  3. Remediation due3 May 2022
Actively exploited (CISA KEV)

ThinkPHP "noneCms" contains an unspecified vulnerability that allows for remote code execution through crafted use of the filter parameter.

Added to KEV: 3 Nov 2021Federal remediation due: 3 May 2022

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

5none Nonecms1.3.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Frequently asked

Is CVE-2018-20062 being actively exploited?

Yes. CVE-2018-20062 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Nov 2021.

How severe is CVE-2018-20062?

CVE-2018-20062 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 99.5% probability of exploitation.

Which products are affected by CVE-2018-20062?

Affected products include 5none Nonecms.

How do I fix CVE-2018-20062?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2018-20062 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.