Table of Contents Plus <= 2106 - Authenticated (Administrator+) Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 2212
- Affected Version
<= 2106- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2022-4479
At a glance
CVE-2022-4479 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Table of Contents Plus WordPress plugin, affecting versions <= 2106. 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 2212; sites on affected versions should update now. Disclosed December 2022, reported by István Márton.
Vulnerability Overview
The Table of Contents Plus plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class' and 'label' properties in the [toc] and [sitemap_pages] shortcodes respectively in versions up to, and including, 2106 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
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')
Table of Contents Plus <= 2106 carries this weakness at class, and reaching it 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 Table of Contents Plus the fix is 2212: builds <= 2106 are affected, anything from 2212 onward is not.
Remediation
Update to version 2212, 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: Table of Contents Plus 2212 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Table of Contents Plus – Automatic Table of Contents for Posts & Pages
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