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Mend.io Vulnerability Database

CVE-2021-4387

Date: June 30, 2023

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.

Language: PHP

Severity Score

8.8

Related Resources (11)

Url: https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks/

Url: https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1/

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-4387

Url: https://plugins.trac.wordpress.org/browser/opal-estate/trunk/inc/ajax-functions.php#L177

Url: https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks/

Url: https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3/

Url: https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2/

Url: https://www.wordfence.com/threat-intel/vulnerabilities/id/2645899c-2b6b-48bd-8f33-2a837a951c5e?source=cve

Url: https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5/

Url: https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4/

Url: https://www.mend.io/vulnerability-database/CVE-2021-4387

Severity Score

8.8

Weakness Type (CWE)

Cross-Site Request Forgery (CSRF)

CWE-352

CVSS v3.1

Base Score:	8.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

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CVE-2021-4387

Date: June 30, 2023

Language: PHP

Severity Score

Related Resources (11)

Severity Score

Weakness Type (CWE)

CVSS v3.1

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