CVE-2021-24747Public exploitNetwork attack vector

Database reads and writes via unescaped ordering parameter

Published Dec 13, 2021 · Updated Aug 3, 2024

SQL injection in CleverPlugins SEO Booster before 3.8 allows remote authenticated users to read and alter database data through an AJAX request. The fn_my_ajaxified_dataloader_ajax handler places the unescaped order[0][dir] request value into an SQL ordering clause, enabling blind and error-based queries. Administrator-level WordPress access is required, bounding exposure to users who can access the plugin's administrative interface.

CVSS severity7.2
High
EPSS probability1.50%
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 CleverPlugins SEO Booster before 3.8 allows remote authenticated users to read and alter database data through an AJAX request. The fn_my_ajaxified_dataloader_ajax handler places the unescaped order[0][dir] request value into an SQL ordering clause, enabling blind and error-based queries. Administrator-level WordPress access is required, bounding exposure to users who can access the plugin's administrative interface.

The record

CVE
CVE-2021-24747
Published
Dec 13, 2021
Updated
Aug 3, 2024
Vendor
CleverPlugins
Product
SEO Booster
Classifications
CWE-89, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.8 <3.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

CleverPlugins · SEO Boosterversion=3.8 <3.8

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/AC:L/Au:S/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
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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