CVE-2021-24631

Name: CVE-2021-24631
Creator: NVD / NIST
Published: 2021-11-08T18:15:08.647+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.52%

Last modified Jun 17, 2026

CVE-2021-24631 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The Unlimited PopUps WordPress plugin through 4.5.3 does not sanitise or escape the did GET parameter before using it in a SQL statement, available to users as low as editor, leading to an authenticated SQL Injection. EPSS estimates a 1.52% chance of exploitation in the next 30 days.

Description

The Unlimited PopUps WordPress plugin through 4.5.3 does not sanitise or escape the did GET parameter before using it in a SQL statement, available to users as low as editor, leading to an authenticated SQL Injection

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.52%

71.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Unlimited Popups Project	Unlimited Popups	<= 4.5.3

References

https://codevigilant.com/disclosure/2021/wp-plugin-unlimited-popups/Exploit, Third Party Advisory
https://wpscan.com/vulnerability/9841176d-1d37-4636-9144-0ca42b6f3605Exploit, Third Party Advisory
https://codevigilant.com/disclosure/2021/wp-plugin-unlimited-popups/Exploit, Third Party Advisory
https://wpscan.com/vulnerability/9841176d-1d37-4636-9144-0ca42b6f3605Exploit, Third Party Advisory

Timeline

Published: Nov 8, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24631?

How severe is CVE-2021-24631?

CVE-2021-24631 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.52% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24631?

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-2021-24631?

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

Scan your code now

Source: NVD / NIST