Cookie Notice & Consent Banner for GDPR & CCPA Compliance <= 1.7.1 - Authenticated Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 1.7.2
- Affected Plugin
- Free Cookie Notice & Consent Banner for Privacy Compliance (GDPR, CCPA, DSGVO and others)
- Affected Version
< 1.7.2- CVSS
- 5.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24590
At a glance
CVE-2021-24590 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Free Cookie Notice & Consent Banner for Privacy Compliance (GDPR, CCPA, DSGVO and others) WordPress plugin, affecting versions < 1.7.2. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account. The issue is fixed in version 1.7.2; sites on affected versions should update now. Disclosed August 2021, reported by Asif Nawaz Minhas.
Vulnerability Overview
The Cookie Notice & Consent Banner for GDPR & CCPA Compliance WordPress plugin before 1.7.2 does not properly sanitize inputs to prevent injection of arbitrary HTML within the plugin's design customization options.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in Free Cookie Notice & Consent Banner for Privacy Compliance (GDPR, CCPA, DSGVO and others) < 1.7.2 takes any authenticated account. 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 Free Cookie Notice & Consent Banner for Privacy Compliance (GDPR, CCPA, DSGVO and others) the fix is 1.7.2: builds < 1.7.2 are affected, anything from 1.7.2 onward is not.
Remediation
Update to version 1.7.2, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Free Cookie Notice & Consent Banner for Privacy Compliance (GDPR, CCPA, DSGVO and others): WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Free Cookie Notice & Consent Banner for Privacy Compliance (GDPR, CCPA, DSGVO and others) 1.7.2 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
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