CVE-2021-24492: The hndtst_action_instance_callback AJAX call of the Handsome Testimonials & Reviews WordPress plugin before 2

Q: How do I fix CVE-2021-24492?

handsome testimonials \& reviews: upgrade to 2.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-24492 being exploited?

CVE-2021-24492 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-2021-24492 affect?

CVE-2021-24492 affects handsome testimonials \& reviews. Severity is high (CVSS 8.8). The hndtst_action_instance_callback AJAX call of the Handsome Testimonials & Reviews WordPress plugin before 2.1.1, available to any authenticated users, does not sanitise, validate or escape the hndtst_previewShortcodeInstanceId POST param

Q: How urgent is CVE-2021-24492?

Priority 55/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2021-24492 is a high-severity flaw (CVSS 8.8) affecting handsome testimonials \& reviews. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The hndtst_action_instance_callback AJAX call of the Handsome Testimonials & Reviews WordPress plugin before 2.1.1, available to any authenticated users, does not sanitise, validate or escape the hndtst_previewShortcodeInstanceId POST parameter before using it in a SQL statement, leading to an SQL Injection issue.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-89
Published	2021-08-02
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: handsome testimonials \& reviews project

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

Am I affected?

Timeline

2021-08-02 11:15 UTCPublished CVE record published
2026-06-17 03:40 UTCUpdated Record last modified

handsome testimonials \& reviews project handsome testimonials \& reviews UPGRADE

Affected: < 2.1.1

Fixed in: 2.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy handsome-testimonials--reviews || rpm -q handsome-testimonials--reviews || handsome-testimonials--reviews --version

2. UPGRADE to 2.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade handsome-testimonials--reviews

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade handsome-testimonials--reviews

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-2021-24492?

handsome testimonials \& reviews: upgrade to 2.1.1. Exact commands for each OS are on this page.

Is CVE-2021-24492 being exploited?

CVE-2021-24492 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-2021-24492 affect?

CVE-2021-24492 affects handsome testimonials \& reviews. Severity is high (CVSS 8.8). The hndtst_action_instance_callback AJAX call of the Handsome Testimonials & Reviews WordPress plugin before 2.1.1, available to any authenticated users, does not sanitise, validate or escape the hndtst_previewShortcodeInstanceId POST param

How urgent is CVE-2021-24492?

Priority 55/100. High severity; Public exploit reference

Software pages

WordPress vulnerabilities

References

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