CVE-2022-21643Network attack vector

Database manipulation via unescaped registration fields

Published Jan 4, 2022 · Updated Apr 23, 2025

SQL injection in register.php in Aaron Junker USOC before Pb2.4Bfx2 allows remote attackers to manipulate the database via registration fields. The registration handler concatenates POSTed username, email, and password values into a mysqli INSERT statement without escaping them. An unauthenticated request reaches the flaw when public registration is enabled, allowing injected SQL to read, write, or delete database data.

CVSS severity9.8
Critical
EPSS probability1.20%
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 register.php in Aaron Junker USOC before Pb2.4Bfx2 allows remote attackers to manipulate the database via registration fields. The registration handler concatenates POSTed username, email, and password values into a mysqli INSERT statement without escaping them. An unauthenticated request reaches the flaw when public registration is enabled, allowing injected SQL to read, write, or delete database data.

The record

CVE
CVE-2022-21643
Published
Jan 4, 2022
Updated
Apr 23, 2025
Vendor
Aaron Junker
Product
Useful Simple Open-Source CMS (USOC)
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 4, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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=< Pb2.4Bfx2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Aaron Junker · Useful Simple Open-Source CMS (USOC)version=< Pb2.4Bfx2

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
10.0GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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