CVE-2021-24239

Name: CVE-2021-24239
Creator: NVD / NIST
Published: 2021-04-22T21:15:09.83+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.60%

Last modified Jun 17, 2026

CVE-2021-24239 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The Pie Register – User Registration Forms. Invitation based registrations, Custom Login, Payments WordPress plugin before 3.7.0.1 does not sanitise the invitaion_code GET parameter when outputting it in the Activation Code page, leading to a reflected Cross-Site Scripting issue.. EPSS estimates a 1.60% chance of exploitation in the next 30 days.

Description

The Pie Register – User Registration Forms. Invitation based registrations, Custom Login, Payments WordPress plugin before 3.7.0.1 does not sanitise the invitaion_code GET parameter when outputting it in the Activation Code page, leading to a reflected Cross-Site Scripting issue.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

1.60%

72.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Genetechsolutions	Pie Register	< 3.7.0.1

References

https://plugins.trac.wordpress.org/changeset/2507536/Patch, Third Party Advisory
https://wpscan.com/vulnerability/f1b67f40-642f-451e-a67a-b7487918ee34Exploit, Third Party Advisory
https://plugins.trac.wordpress.org/changeset/2507536/Patch, Third Party Advisory
https://wpscan.com/vulnerability/f1b67f40-642f-451e-a67a-b7487918ee34Exploit, Third Party Advisory

Timeline

Published: Apr 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24239?

How severe is CVE-2021-24239?

CVE-2021-24239 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.60% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24239?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-24239?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST