Custom Share Buttons with Floating Sidebar <= 4.1 - Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 4.2
- Affected Plugin
- Custom Share Buttons with Floating Sidebar
- Affected Version
<= 4.1- CVSS
- 6.1Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2022-1717
At a glance
CVE-2022-1717 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Custom Share Buttons with Floating Sidebar WordPress plugin, affecting versions <= 4.1. 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 4.2; sites on affected versions should update now. Disclosed May 2022, reported by Asif Nawaz Minhas.
Vulnerability Overview
The Custom Share Buttons with Floating Sidebar plugin for WordPress is vulnerable to Cross-Site Scripting in versions up to, and including, 4.1 via several parameters. This makes it possible for authenticated attackers to inject arbitrary web scripts that may execute when a victim accesses a page containing the malicious payload.
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 Custom Share Buttons with Floating Sidebar <= 4.1 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 Custom Share Buttons with Floating Sidebar the fix is 4.2: builds <= 4.1 are affected, anything from 4.2 onward is not.
Remediation
Update to version 4.2, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Custom Share Buttons with Floating Sidebar: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Custom Share Buttons with Floating Sidebar 4.2 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C