Top Bar <= 3.0.3 - Authenticated (Administrator+) Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 3.0.4
- Affected Plugin
- Top Bar
- Affected Version
<= 3.0.3- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2022-2629
At a glance
CVE-2022-2629 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Top Bar WordPress plugin, affecting versions <= 3.0.3. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Administrator level or above. The issue is fixed in version 3.0.4; sites on affected versions should update now. Disclosed September 2022, reported by Asif Nawaz Minhas.
Vulnerability Overview
The Top Bar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the tpbr_message,tpbr_btn_text,tpbr_btn_url, and tpbr_color parameters. This allows authenticated users with administrator-level permissions 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 interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in Top Bar <= 3.0.3 takes an account at Administrator level or above. 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 Top Bar the fix is 3.0.4: builds <= 3.0.3 are affected, anything from 3.0.4 onward is not.
Remediation
Update to version 3.0.4, or a newer patched version
How does WordSec protect against this?
An attacker needs Administrator access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Top Bar 3.0.4 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
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