CVE-2021-39351Public exploitNetwork attack vector

Database disclosure via unfiltered banner identifier

Published Oct 6, 2021 · Updated Feb 14, 2025

SQL injection in WP Bannerize 2.0.0 through 4.0.2 allows remote authenticated users to read sensitive database data via a crafted id parameter. The updateBannerFromLocal, setBannerToTrash, unsetBannerToTrash, and deleteBanner functions interpolate the POST id value into SQL queries without filtering it. Access to the WordPress dashboard is required, and successful exploitation exposes records stored in the site's database.

CVSS severity6.5
Medium
EPSS probability1.13%
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 WP Bannerize 2.0.0 through 4.0.2 allows remote authenticated users to read sensitive database data via a crafted id parameter. The updateBannerFromLocal, setBannerToTrash, unsetBannerToTrash, and deleteBanner functions interpolate the POST id value into SQL queries without filtering it. Access to the WordPress dashboard is required, and successful exploitation exposes records stored in the site's database.

The record

CVE
CVE-2021-39351
Published
Oct 6, 2021
Updated
Feb 14, 2025
Vendor
Giovambattista Fazioli
Product
WP Bannerize
Classifications
CWE-89, T1213, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 6, 2021CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 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=2.0.0 - 4.0.2 4.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Giovambattista Fazioli · WP Bannerizeversion=2.0.0 - 4.0.2 4.0.2

Published CVSS scores

6.5WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
7.7CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

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')
T1213Data from Information Repositories
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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