CVE-2020-18131Public exploitNetwork attack vector

High-rank account creation via cross-origin member request

Published May 8, 2023 · Updated Jan 29, 2025

Cross-site request forgery in Bluethrust Clan Scripts 4.0 allows remote attackers to create a high-rank account via a crafted form. The member-creation handler at /members/console.php?cID=5 processes a cross-origin POST containing attacker-selected credentials, rank 41, and the published checkCSRF value. An administrator must be logged in and submit the form; success creates an attacker-controlled account with high-rank access.

CVSS severity8.8
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Bluethrust Clan Scripts 4.0 allows remote attackers to create a high-rank account via a crafted form. The member-creation handler at /members/console.php?cID=5 processes a cross-origin POST containing attacker-selected credentials, rank 41, and the published checkCSRF value. An administrator must be logged in and submit the form; success creates an attacker-controlled account with high-rank access.

The record

CVE
CVE-2020-18131
Published
May 8, 2023
Updated
Jan 29, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-352, T1136
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 29, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1136Create Account

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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