CVE-2021-24321Public exploitNetwork attack vector

Database disclosure via unsanitized listing-search parameters

Published Jun 1, 2021 · Updated Aug 3, 2024

SQL injection in BoldThemes Bello WordPress Theme before 1.6.0 allows remote attackers to read database contents through listing searches. The listing search inserts five GET parameters directly into a SQL statement without sanitization, enabling boolean-based blind query manipulation. No authentication is required; the published proof of concept extracts WordPress user records through observable true-or-false responses.

CVSS severity9.8
Critical
EPSS probability66.58%
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 BoldThemes Bello WordPress Theme before 1.6.0 allows remote attackers to read database contents through listing searches. The listing search inserts five GET parameters directly into a SQL statement without sanitization, enabling boolean-based blind query manipulation. No authentication is required; the published proof of concept extracts WordPress user records through observable true-or-false responses.

The record

CVE
CVE-2021-24321
Published
Jun 1, 2021
Updated
Aug 3, 2024
Vendor
BoldThemes
Product
Bello WordPress Theme
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 1, 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=1.6.0 <1.6.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BoldThemes · Bello WordPress Themeversion=1.6.0 <1.6.0

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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-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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