Stylish Cost Calculator <= 7.0.3 - Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 7.0.4
- Affected Version
<= 7.0.3- CVSS
- 5.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24822
At a glance
CVE-2021-24822 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Stylish Cost Calculator WordPress plugin, affecting versions <= 7.0.3. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 7.0.4; sites on affected versions should update now. Disclosed November 2021, reported by apple502j.
Vulnerability Overview
The Stylish Cost Calculator WordPress plugin before 7.0.4 does not have any authorisation and CSRF checks on some of its AJAX actions (available to authenticated users), which could allow any authenticated users, such as subscriber to call them, and perform Stored Cross-Site Scripting attacks against logged in admin, as well as frontend users due to the lack of sanitisation and escaping in some parameters
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in Stylish Cost Calculator <= 7.0.3 takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Stylish Cost Calculator the fix is 7.0.4: builds <= 7.0.3 are affected, anything from 7.0.4 onward is not.
Remediation
Update to version 7.0.4, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Stylish Cost Calculator: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Stylish Cost Calculator 7.0.4 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Stylish Cost Calculator – Quote Generator, Lead Gen & Price Estimator
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C