CVE-2021-34117Public exploitNetwork attack vector

Database disclosure via unescaped API username

Published Feb 15, 2023 · Updated Mar 20, 2025

SQL injection in SEO Panel 4.9.0 allows remote authenticated users to read sensitive database data through the username API parameter. The getUserName API passes username without filtering to __checkUserName, which interpolates it inside a quoted SQL WHERE clause. A valid API key and secret are required to reach the endpoint, and the demonstrated boolean-based blind injection exposes database contents without reported modification or service interruption.

CVSS severity7.5
High
EPSS probability0.94%
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 SEO Panel 4.9.0 allows remote authenticated users to read sensitive database data through the username API parameter. The getUserName API passes username without filtering to __checkUserName, which interpolates it inside a quoted SQL WHERE clause. A valid API key and secret are required to reach the endpoint, and the demonstrated boolean-based blind injection exposes database contents without reported modification or service interruption.

The record

CVE
CVE-2021-34117
Published
Feb 15, 2023
Updated
Mar 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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')
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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