CVE-2021-24221Public exploitNetwork attack vector

Database access via unsanitized shortcode result identifier

Published Apr 12, 2021 · Updated Aug 3, 2024

SQL injection in Quiz and Survey Master before 7.1.12 allows remote attackers to access the database through a crafted result_id request. The shortcode_display_result method inserts the result_id GET value directly into a SELECT query when [qsm_result] omits its id attribute. An Author can place the shortcode on a post or page; if that content is public, no authentication is required to read or modify database data.

CVSS severity8.8
High
EPSS probability1.89%
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 Quiz and Survey Master before 7.1.12 allows remote attackers to access the database through a crafted result_id request. The shortcode_display_result method inserts the result_id GET value directly into a SELECT query when [qsm_result] omits its id attribute. An Author can place the shortcode on a post or page; if that content is public, no authentication is required to read or modify database data.

The record

CVE
CVE-2021-24221
Published
Apr 12, 2021
Updated
Aug 3, 2024
Vendor
ExpressTech Systems
Product
Quiz and Survey Master
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 12, 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=7.1.12 <7.1.12

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ExpressTech Systems · Quiz and Survey Masterversion=7.1.12 <7.1.12

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NIST NVDCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
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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