CVE-2023-45121Public exploitNetwork attack vector

Database query manipulation via unfiltered quiz description

Published Dec 21, 2023 · Updated May 19, 2025

SQL injection in Projectworlds Online Examination System 1.0 allows remote authenticated users to alter database queries via desc. The addquiz branch of /update.php reads the desc parameter without character validation and sends it unfiltered to the database. An authenticated account can exploit the network-facing quiz-creation request to read or modify database data and interrupt the service.

CVSS severity8.8
High
EPSS probability0.67%
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 Projectworlds Online Examination System 1.0 allows remote authenticated users to alter database queries via desc. The addquiz branch of /update.php reads the desc parameter without character validation and sends it unfiltered to the database. An authenticated account can exploit the network-facing quiz-creation request to read or modify database data and interrupt the service.

The record

CVE
CVE-2023-45121
Published
Dec 21, 2023
Updated
May 19, 2025
Vendor
Projectworlds Pvt. Limited
Product
Online Examination System
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 21, 2023CVE publishedPublication date reported by the CVE source.
  2. May 19, 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=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Projectworlds Pvt. Limited · Online Examination Systemversion=1.0

Published CVSS scores

8.8Fluid AttacksCVSS: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.

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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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