Coming Soon, Under Construction & Maintenance Mode By Dazzler <= 1.6.3 - Admin+ Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 1.6.7
- Affected Version
<= 1.6.3- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24539
At a glance
CVE-2021-24539 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Coming Soon, Under Construction & Maintenance Mode By Dazzler WordPress plugin, affecting versions <= 1.6.3. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). The issue is fixed in version 1.6.7; sites on affected versions should update now. Disclosed October 2021, reported by Asif Nawaz Minhas.
Vulnerability Overview
The Coming Soon, Under Construction & Maintenance Mode By Dazzler WordPress plugin before 1.6.7 does not sanitise or escape its description setting when outputting it in the frontend when the Coming Soon mode is enabled, even when the unfiltered_html capability is disallowed, leading to an authenticated Stored Cross-Site Scripting issue
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 Coming Soon, Under Construction & Maintenance Mode By Dazzler <= 1.6.3 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 Coming Soon, Under Construction & Maintenance Mode By Dazzler the fix is 1.6.7: builds <= 1.6.3 are affected, anything from 1.6.7 onward is not.
Remediation
Update to version 1.6.7, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Coming Soon, Under Construction & Maintenance Mode By Dazzler: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Coming Soon, Under Construction & Maintenance Mode By Dazzler 1.6.7 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in Coming Soon, Under Construction & Maintenance Mode By Dazzler
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