CVE-2023-28659Public exploitNetwork attack vector

Authenticated database query execution via countdown ID

Published Mar 22, 2023 · Updated Feb 25, 2025

SQL injection in Plugin Builders Waiting: One-click countdowns 0.6.2 and earlier allows remote authenticated users to execute database queries. The pbc_save_downs AJAX action treats the pbc_down[meta][id] value as SQL syntax, as demonstrated by a nested SELECT SLEEP payload. A valid WordPress session with subscriber-level access is sufficient, and the payload provides a time-based SQL execution oracle.

CVSS severity8.8
High
EPSS probability0.87%
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 Plugin Builders Waiting: One-click countdowns 0.6.2 and earlier allows remote authenticated users to execute database queries. The pbc_save_downs AJAX action treats the pbc_down[meta][id] value as SQL syntax, as demonstrated by a nested SELECT SLEEP payload. A valid WordPress session with subscriber-level access is sufficient, and the payload provides a time-based SQL execution oracle.

The record

CVE
CVE-2023-28659
Published
Mar 22, 2023
Updated
Feb 25, 2025
Vendor
Plugin Builders
Product
Waiting: One-click countdowns
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 22, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 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?

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

  1. Affected versionversion=<= 0.6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Plugin Builders · Waiting: One-click countdownsversion=<= 0.6.2

Published CVSS scores

8.8CISA ADP VulnrichmentCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8TenableCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
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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