CVE-2021-24275

Name: CVE-2021-24275
Creator: NVD / NIST
Published: 2021-05-05T19:15:08.623+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 18.16%

Last modified Jun 17, 2026

CVE-2021-24275 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The Popup by Supsystic WordPress plugin before 1.10.5 did not sanitise the tab parameter of its options page before outputting it in an attribute, leading to a reflected Cross-Site Scripting issue. EPSS estimates a 18.16% chance of exploitation in the next 30 days.

Description

The Popup by Supsystic WordPress plugin before 1.10.5 did not sanitise the tab parameter of its options page before outputting it in an attribute, 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

18.16%

96.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Supsystic	Popup	< 1.10.5

References

http://packetstormsecurity.com/files/164311/WordPress-Popup-1.10.4-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
https://wpscan.com/vulnerability/efdc76e0-c14a-4baf-af70-9d381107308fExploit, Third Party Advisory
http://packetstormsecurity.com/files/164311/WordPress-Popup-1.10.4-Cross-Site-Scripting.htmlExploit, Third Party Advisory, VDB Entry
https://wpscan.com/vulnerability/efdc76e0-c14a-4baf-af70-9d381107308fExploit, Third Party Advisory

Timeline

Published: May 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24275?

The Popup by Supsystic WordPress plugin before 1.10.5 did not sanitise the tab parameter of its options page before outputting it in an attribute, leading to a reflected Cross-Site Scripting issue

How severe is CVE-2021-24275?

CVE-2021-24275 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 18.16% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24275?

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-2021-24275?

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

Scan your code now

Source: NVD / NIST