CVE-2021-24764: The Perfect Survey WordPress plugin before 1.5.2 does not sanitise and escape multiple parameters (id and filt

Q: How do I fix CVE-2021-24764?

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

Q: Is CVE-2021-24764 being exploited?

CVE-2021-24764 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-2021-24764 affect?

CVE-2021-24764 affects perfect survey. Severity is medium (CVSS 6.1). The Perfect Survey WordPress plugin before 1.5.2 does not sanitise and escape multiple parameters (id and filters[session_id] of single_statistics page, type and message of importexport page) before outputting them back in pages/attributes

Q: How urgent is CVE-2021-24764?

Priority 40/100. Public exploit reference

This month

MEDIUM 6.1UPGRADE

CVE-2021-24764 is a medium-severity flaw (CVSS 6.1) 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 sanitise and escape multiple parameters (id and filters[session_id] of single_statistics page, type and message of importexport page) before outputting them back in pages/attributes in the admin dashboard, leading to Reflected Cross-Site Scripting issues

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-79
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.

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-2021-24764?

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

Is CVE-2021-24764 being exploited?

CVE-2021-24764 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-2021-24764 affect?

CVE-2021-24764 affects perfect survey. Severity is medium (CVSS 6.1). The Perfect Survey WordPress plugin before 1.5.2 does not sanitise and escape multiple parameters (id and filters[session_id] of single_statistics page, type and message of importexport page) before outputting them back in pages/attributes

How urgent is CVE-2021-24764?

Priority 40/100. Public exploit reference

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-2021-24763 HIGH 8.8 UPGRADE The Perfect Survey WordPress plugin before 1.5.2 does not have proper authorisation nor CSRF checks in the sav
CVE-2021-24762 CRITICAL 9.8 UPGRADE The Perfect Survey WordPress plugin before 1.5.2 does not validate and escape the question_id GET parameter be

References

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