CVE-2021-24762Public exploitNetwork attack vector

Unauthenticated SQL injection via question_id parameter

Published Feb 1, 2022 · Updated Aug 3, 2024

SQL injection in Perfect Survey before 1.5.2 allows remote attackers to read or alter WordPress database data without authentication. The get_question AJAX action places the unvalidated and unescaped question_id GET value directly into an SQL statement. Exploitation requires question_id to begin with an existing post ID, after which a crafted UNION query can disclose WordPress usernames and password hashes or manipulate database data.

CVSS severity9.8
Critical
EPSS probability86.78%
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 Perfect Survey before 1.5.2 allows remote attackers to read or alter WordPress database data without authentication. The get_question AJAX action places the unvalidated and unescaped question_id GET value directly into an SQL statement. Exploitation requires question_id to begin with an existing post ID, after which a crafted UNION query can disclose WordPress usernames and password hashes or manipulate database data.

The record

CVE
CVE-2021-24762
Published
Feb 1, 2022
Updated
Aug 3, 2024
Vendor
Perfect Survey
Product
Perfect Survey
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 1, 2022CVE 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=1.5.2 <1.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Perfect Survey · Perfect Surveyversion=1.5.2 <1.5.2

Published CVSS scores

7.5NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/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 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 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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