Vulnerability report

Active exploitation observed Confirmed confidence In CISA KEV

CVE-2018-20062

NoneCms

NoneCms

Watch CVE-2018-20062 Browse KEV feed
Severity
CVSS 9.8 · Critical
Confidence
Confirmed
Exploit status
Observed in sensors
EPSS
99.5%
First observed
28 Jun 2026
Last observed
09 Oct 2026

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2018-20062 is an unauthenticated vulnerability affecting NoneCms. 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...

Is it exploited?

Yes. Previdian sensors observed exploitation attempts with confirmed confidence. Listed in CISA KEV.

Who is affected?

NoneCms.

What should we do?

Patch immediately, validate internet-facing exposure, and monitor for matching requests.

Overview

An issue was discovered in NoneCms V1.3

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.

Published
11 Dec 2018
Exploitation Reported
03 Nov 2021
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

metasploit nuclei_scanner php cisa

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 03 Nov 2021

A trusted third party reported exploitation.

Active exploitation observed

Previdian sensor

First observed 05 Jul 2026

Previdian first observed exploitation attempts targeting this vulnerability in our honeypot sensors.

Proof of concept available

GitHub

Recorded 07 Nov 2022

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

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Source Added
CISA First 2021-11-03 00:00 UTC
Previdian Sensors 2026-08-04 09:26 UTC

Operational indicators for this CVE are listed under Detection.

Sensor telemetry

First-party evidence of exploitation activity

Previdian sensors recorded exploitation attempts targeting this vulnerability. The cards and chart show volume, unique attackers, and daily activity.

13,549

Attempts observed

1,228

Unique attacker IPs

75

Attacker countries

AE · AM · AR · AT · AU · BD · BE · BG · BR · CA · CH · CM · CN · CO · CZ · DE · DK · DO · EE · ER · ES · ET · FI · FR · GB · GE · GR · GT · HK · ID · IE · IN · IQ · IR · IT · JP · KR · KZ · LT · LU · LV · LY · MA · MD · MW · MX · MY · NL · NP · NZ · PA · PE · PH · PK · PL · PT · PY · RS · RU · SA · SC · SE · SG · SI · TH · TR · TW · UA · US · UZ · VE · VN · YE · ZA · ZM

81

Sensors observed

CVE-2018-20062 exploitation attempts over the last 91 days

Daily events observed by Previdian sensors

Updated 09 Oct 2026

86
60
70
78
82
58
72
70
88
98
98
94
54
65
56
72
73
33
34
72
95
82
116
96
89
108
85
244
110
114
67
82
126
100
128
74
70
73
50
34
46
106
134
133
150
130
129
98
125
218
263
172
226
334
245
198
145
181
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127
150
165
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140
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138
155
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131
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266
329
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336
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336
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310
262
53
11 Jul 30 Jul 18 Aug 6 Sep 9 Oct

First observed 28 Jun 2026 · Last observed 09 Oct 2026

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Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
63
62
6

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

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Attacker IP Indicators

Attacker IP indicators observed · available in Pro and Enterprise.

Sensor-derived attacker IP indicators are available to Pro and Enterprise accounts under Detection and through the Pro API.

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Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2018/CVE-2018-20062.yaml 02 Jun 2025
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/webapp/thinkphp_rce.rb 28 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.8 Critical

Potential damage if exploited. Separate from whether attackers are using it.

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

EPSS

99.5%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

All CVSS Scores

CVSS v3.1 9.8 Critical

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

CVSS v2.0 7.5 High

AV:N/AC:L/Au:N/C:P/I:P/A:P

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

ThinkPHP 5.0.23 - Remote Code Execution

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 09:37 UTC

    Observed by Previdian sensors

    Evidence-backed exploitation signal

  2. 17:29 UTC

    Indicators of compromise added (1282)

    Indicators of compromise recorded

  3. 14:20 UTC

    Public PoC available

    Public proof-of-concept code published

  4. 14:11 UTC

    Nuclei template available

    Scanner coverage available

  5. 15:02 UTC

    Metasploit module available

    Exploit module available

  6. 00:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  7. 18:00 UTC

    CVE published

    Vulnerability disclosed publicly

  8. 00:00 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2018-20062

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2018-20062",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.9953,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": true
  },
  "sensor_telemetry": { "attempts": 13549, "sensors": 81 }
}