CVE-2021-24821 Cost Calculator < 1.6 - Contributor+ Stored Cross-Site Scripting

Q: What is CVE-2021-24821?

CVE-2021-24821 is a medium-severity cross-site scripting vulnerability in Unknown Cost Calculator, published on 7 Mar 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Medium 5.4 Published 7 Mar 2022 Updated 3 Aug 2024

Contributors can inject malicious scripts via Cost Calculator fields, potentially leading to code execution or account takeover on WordPress sites.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2021-24821?

CVE-2021-24821 is a medium-severity cross-site scripting vulnerability in Unknown Cost Calculator, published on 7 Mar 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official 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)

Weakness: CWE-79

Which versions are affected by CVE-2021-24821?

It affects 1 product.

Products include Nicdark Cost Calculator.

How do I fix CVE-2021-24821?

No fix has been published for CVE-2021-24821 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-24821 being exploited?

There is no known exploitation of CVE-2021-24821 in the wild and no public exploit code.

Sources

Also known as GHSA-p6g4-5hgj-p576.