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CVE-2023-30777— WordPress Advanced Custom Fields / Advanced Custom Fields PRO plugins <= 6.1.5 vulnerable to Cross Site Scripting (XSS)

Quick assessment

Affected
WP Engine Advanced Custom Fields Pro
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 Advanced Custom Fields PRO 6.1.5及之前版本存在跨站脚本漏洞，该漏洞源于不充分的输入清理和输出转义，攻击者利用该漏洞可以在页面中注入恶意脚本。

CVSS 7.1 · High EPSS 37.85% · P99

Public Exploits 1

Nuclei · 1 CVE-2023-30777.yaml [template]
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I. Basic Information for CVE-2023-30777

Vulnerability Information
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Vulnerability Title
WordPress Advanced Custom Fields / Advanced Custom Fields PRO plugins <= 6.1.5 vulnerable to Cross Site Scripting (XSS)
Source: CVE Program / CVE List V5
Vulnerability Description
Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in WP Engine Advanced Custom Fields Pro, WP Engine Advanced Custom Fields plugins <= 6.1.5 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Plugin Advanced Custom Fields PRO 跨站脚本漏洞
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 Advanced Custom Fields PRO 6.1.5及之前版本存在跨站脚本漏洞，该漏洞源于不充分的输入清理和输出转义，攻击者利用该漏洞可以在页面中注入恶意脚本。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
WP Engine Advanced Custom Fields Pro n/a ~ 6.1.5 -
WP Engine Advanced Custom Fields n/a ~ 6.1.5 -

II. Public POCs for CVE-2023-30777

# POC Description Source Link Shenlong Link
1 Proof of Concept (PoC) URL generator for a reflected XSS vulnerability in the Advanced Custom Fields WordPress plugin. https://github.com/Alucard0x1/CVE-2023-30777 POC Details
2 Advanced Custom Fields beofre 6.1.6 is susceptible to cross-site scripting via the post_status parameter due to insufficient input sanitization and output escaping. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-30777.yaml POC Details
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III. Intelligence Information for CVE-2023-30777

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Vendor Advisories for CVE-2023-30777 (3)

IV. Related Vulnerabilities

Same product: Advanced Custom Fields Pro
Same vendor: WP Engine
Same weakness: CWE-79

V. Comments for CVE-2023-30777

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