CVE-2021-24821

Name: CVE-2021-24821
Creator: NVD / NIST
Published: 2022-03-07T09:15:08.09+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.60%

Last modified Jun 17, 2026

CVE-2021-24821 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. The Cost Calculator WordPress plugin before 1.6 allows users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks via the Description fields of a Cost Calculator > Price Settings (which gets injected on the edit page as well as any page that embeds the calculator using the shortcode), as well as the Text Preview field of a Project (injected on the edit project page). EPSS estimates a 0.60% chance of exploitation in the next 30 days.

Description

The Cost Calculator WordPress plugin before 1.6 allows users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks via the Description fields of a Cost Calculator > Price Settings (which gets injected on the edit page as well as any page that embeds the calculator using the shortcode), as well as the Text Preview field of a Project (injected on the edit project page)

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.60%

43.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nicdark	Cost Calculator	< 1.6

References

https://wpscan.com/vulnerability/f0915b66-0b99-4aeb-9fba-759cafaeb0cbExploit, Third Party Advisory
https://wpscan.com/vulnerability/f0915b66-0b99-4aeb-9fba-759cafaeb0cbExploit, Third Party Advisory

Timeline

Published: Mar 7, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24821?

How severe is CVE-2021-24821?

CVE-2021-24821 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24821?

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-2021-24821?

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

Scan your code now

Source: NVD / NIST