CVE-2021-24762: The Perfect Survey WordPress plugin before 1.5.2 does not validate and escape the question_id GET parameter be

Q: How do I fix CVE-2021-24762?

perfect survey: upgrade to 1.5.2. Exact commands for each OS are on this page.

Q: Is CVE-2021-24762 being exploited?

CVE-2021-24762 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-24762 affect?

CVE-2021-24762 affects perfect survey. Severity is critical (CVSS 9.8). The Perfect Survey WordPress plugin before 1.5.2 does not validate and escape the question_id GET parameter before using it in a SQL statement in the get_question AJAX action, allowing unauthenticated users to perform SQL injection.

Q: How urgent is CVE-2021-24762?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2021-24762 is a critical-severity flaw (CVSS 9.8) affecting perfect survey. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Perfect Survey WordPress plugin before 1.5.2 does not validate and escape the question_id GET parameter before using it in a SQL statement in the get_question AJAX action, allowing unauthenticated users to perform SQL injection.

Why this priority

Critical severity
EPSS top 1%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	86.8% (top 1%)
CISA exploited list	No
Weakness	CWE-89
Published	2022-02-01
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: getperfectsurvey

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-02-01 13:15 UTCPublished CVE record published
2026-06-17 03:40 UTCUpdated Record last modified

getperfectsurvey perfect survey UPGRADE

Affected: < 1.5.2

Fixed in: 1.5.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy perfect-survey || rpm -q perfect-survey || perfect-survey --version

2. UPGRADE to 1.5.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade perfect-survey

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade perfect-survey

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: WordPress Plugin Perfect Survey - 1.5.1 - SQLi (Unauthenticated)
Metasploit: WordPress Plugin Perfect Survey 1.5.1 SQLi (Unauthenticated)
Nuclei scan template: WordPress Perfect Survey <1.5.2 - SQL Injection

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-24762?

perfect survey: upgrade to 1.5.2. Exact commands for each OS are on this page.

Is CVE-2021-24762 being exploited?

CVE-2021-24762 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-24762 affect?

CVE-2021-24762 affects perfect survey. Severity is critical (CVSS 9.8). The Perfect Survey WordPress plugin before 1.5.2 does not validate and escape the question_id GET parameter before using it in a SQL statement in the get_question AJAX action, allowing unauthenticated users to perform SQL injection.

How urgent is CVE-2021-24762?

Priority 69/100. Critical severity; EPSS top 1%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

WordPress vulnerabilities

Related CVEs

CVE-2021-24765 MEDIUM 6.1 UPGRADE The Perfect Survey WordPress plugin through 1.5.2 does not validate and escape the X-Forwarded-For header valu
CVE-2021-24764 MEDIUM 6.1 UPGRADE The Perfect Survey WordPress plugin before 1.5.2 does not sanitise and escape multiple parameters (id and filt
CVE-2021-24763 HIGH 8.8 UPGRADE The Perfect Survey WordPress plugin before 1.5.2 does not have proper authorisation nor CSRF checks in the sav

References

← Back to latest CVEs