Store Locator Plus <= 5.12.3 - Unauthenticated Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 5.13.8
- Affected Plugin
- Store Locator Plus® for WordPress
- Affected Version
<= 5.12.3- CVSS
- 6.1Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24290
At a glance
CVE-2021-24290 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Store Locator Plus® for WordPress WordPress plugin, affecting versions <= 5.12.3. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 5.13.8; sites on affected versions should update now. Disclosed April 2021, reported by Chloe Chamberland.
Vulnerability Overview
There are several endpoints in the Store Locator Plus for WordPress plugin through 5.12.3 that could allow unauthenticated attackers the ability to inject malicious JavaScript into pages.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in Store Locator Plus® for WordPress <= 5.12.3 takes no account at all. 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 Store Locator Plus® for WordPress the fix is 5.13.8: builds <= 5.12.3 are affected, anything from 5.13.8 onward is not.
Remediation
Update to version 5.13.8, or a newer patched version
How does WordSec protect against this?
Requests carrying this pattern arrive without a session, so nothing upstream of the firewall gets a chance to reject them: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Store Locator Plus® for WordPress 5.13.8 closes this, and updating the plugin is the step that ends it.
- Firewall
- Login Security
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Store Locator Plus® for WordPress
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