CVE-2021-24182Public exploitNetwork attack vector

Database disclosure via unprepared AJAX query

Published Apr 5, 2021 · Updated Aug 3, 2024

SQL injection in Themeum Tutor LMS before 1.8.3 allows remote authenticated users to read arbitrary database data through an AJAX request. The tutor_quiz_builder_get_answers_by_question function interpolates the question_id POST value into get_results queries without a prepared statement or SQL escaping. Student-level access reaches the action because it lacks capability checks, and a UNION payload returns selected database records directly in the response.

CVSS severity6.5
Medium
EPSS probability1.74%
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 Themeum Tutor LMS before 1.8.3 allows remote authenticated users to read arbitrary database data through an AJAX request. The tutor_quiz_builder_get_answers_by_question function interpolates the question_id POST value into get_results queries without a prepared statement or SQL escaping. Student-level access reaches the action because it lacks capability checks, and a UNION payload returns selected database records directly in the response.

The record

CVE
CVE-2021-24182
Published
Apr 5, 2021
Updated
Aug 3, 2024
Vendor
Themeum
Product
Tutor LMS
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 5, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=1.8.3 <1.8.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Themeum · Tutor LMSversion=1.8.3 <1.8.3

Published CVSS scores

6.5WordfenceCVSS:3.1/AV:N/AC:L/PR:L/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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