Mihdan: No External Links <= 4.7.4 - Cross-Site Scripting
Strategic Overview
- Status
- Patched in 4.8.0
- Affected Plugin
- No External Links
- Affected Version
<= 4.7.4- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2022-1095
At a glance
CVE-2022-1095 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the No External Links WordPress plugin, affecting versions <= 4.7.4. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). The issue is fixed in version 4.8.0; sites on affected versions should update now. Disclosed May 2022, reported by Vaibhav Nitin Gaikwad.
Vulnerability Overview
The Mihdan: No External Links plugin for WordPress is vulnerable to Stored Cross-Site Scripting via several parameters in versions up to, and including 4.7.4. This makes it possible for admin level attackers to inject arbitrary web scripts on web pages that execute whenever another administrator accesses the page. This can be exploited on multi-site installations and installations where unfiltered_html is 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')
Reaching this weakness in No External Links <= 4.7.4 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 No External Links the fix is 4.8.0: builds <= 4.7.4 are affected, anything from 4.8.0 onward is not.
Remediation
Update to version 4.8.0, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to No External Links: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: No External Links 4.8.0 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in No External Links
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