CVE-2021-4387— Opal Estate <= 1.6.11 - Cross-Site Request Forgery Bypass
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I. Basic Information for CVE-2021-4387
Vulnerability Information
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Vulnerability Title
Opal Estate <= 1.6.11 - Cross-Site Request Forgery Bypass
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨站请求伪造(CSRF)
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress Plugin WP Opal Estate 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress Plugin WP Opal Estate 1.6.11及之前版本存在跨站请求伪造漏洞，该漏洞源于对opalestate_set_feature_property() 和 opalestate_remove_feature_property
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| wpopal | Opal Estate | * ~ 1.6.11 | - |
II. Public POCs for CVE-2021-4387
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same vendor: wpopal
- CVE-2025-62913
WordPress Opal Service plugin <= 1.9.1 - Cross Site Scriptin - CVE-2025-6934
Opal Estate Pro <= 1.7.5 - Unauthenticated Privilege Escalat - CVE-2025-23967
WordPress GG Bought Together for WooCommerce plugin <= 1.0.2 - CVE-2025-47535
WordPress Opal Woo Custom Product Variation plugin <= 1.2.0 - CVE-2025-31748
WordPress Opal Portfolio Plugin <= 1.0.4 - Stored Cross Site
Same weakness: CWE-352
- CVE-2021-47953
OpenCart 3.0.3.7 Cross-Site Request Forgery via account/pass - CVE-2021-47946
OpenCart 3.0.3.6 Account Takeover via Cross Site Request For - CVE-2022-50955
WordPress Plugin Curtain 1.0.2 Cross-site Request Forgery - CVE-2026-8194
osTicket Dispatcher class.dispatcher.php cross-site request - CVE-2026-42286
Emlog: Cross-Site Request Forgery in Admin Functions
V. Comments for CVE-2021-4387
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