CVE-2020-18155Public exploitNetwork attack vector

Unauthenticated SQL execution via PDO search query

Published Jul 14, 2021 · Updated Aug 4, 2024

SQL injection in the search page of Subrion CMS 4.2.1 and earlier allows remote attackers to execute SQL through the q parameter. The PDO adapter's bind() method replaces placeholders in SQL text by string substitution, allowing a closing parenthesis and appended statement in q to alter the executed query. The public route requires no account, but the site must use the nondefault PDO connector; successful injection can read or modify database contents or interrupt database-backed service.

CVSS severity9.8
Critical
EPSS probability1.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in the search page of Subrion CMS 4.2.1 and earlier allows remote attackers to execute SQL through the q parameter. The PDO adapter's bind() method replaces placeholders in SQL text by string substitution, allowing a closing parenthesis and appended statement in q to alter the executed query. The public route requires no account, but the site must use the nondefault PDO connector; successful injection can read or modify database contents or interrupt database-backed service.

The record

CVE
CVE-2020-18155
Published
Jul 14, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

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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