CVE-2021-4387
4.3 · MEDIUMOverview
CVE-2021-4387 is a medium-severity vulnerability affecting wpopal opal_estate. It was published on July 1, 2023 and has a CVSS 3.1 base score of 4.3 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
The Opal Estate plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.6.11. This is due to missing or incorrect nonce validation on the opalestate_set_feature_property() and opalestate_remove_feature_property() functions. This makes it possible for unauthenticated attackers to set and remove featured properties via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Remediation
Check the references section for vendor advisories and patches from wpopal. Update opal_estate to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| wpopal | opal_estate | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2021-4387?
CVE-2021-4387 is a medium-severity vulnerability affecting wpopal opal_estate. It was published on July 1, 2023 and has a CVSS 3.1 base score of 4.3 (MEDIUM).
How severe is CVE-2021-4387?
This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-4387?
Check the references section for vendor advisories and patches from wpopal. Update opal_estate to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-4387?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-4387 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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