Smash Balloon Plugins (Various Versions) - Reflected Cross-Site Scripting
Strategic Overview
- Status
- Patched in 2.9.2
- Affected Plugin
- Smash Balloon Social Photo Feed – Easy Social Feeds Plugin
- Affected Version
<= 2.9.1- CVSS
- 6.1Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE pending
At a glance
This record tracks a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Smash Balloon Social Photo Feed WordPress plugin, affecting versions <= 2.9.1. 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 2.9.2; sites on affected versions should update now. Disclosed July 2021, reported by WPScanTeam.
Vulnerability Overview
Several Smash Balloon Plugins for WordPress are vulnerable to Reflected Cross-Site Scripting via URLs in various versions due to insufficient input sanitization and output escaping with the use of add_query_arg. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
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 Smash Balloon Social Photo Feed <= 2.9.1 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 Smash Balloon Social Photo Feed the fix is 2.9.2: builds <= 2.9.1 are affected, anything from 2.9.2 onward is not.
Remediation
Update to version 2.9.2, or a newer patched version
How WordSec helps
The attempt arrives as an ordinary request to Smash Balloon Social Photo Feed: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Smash Balloon Social Photo Feed 2.9.2 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Smash Balloon Social Photo Feed – Easy Social Feeds Plugin
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C