CVE-2023-5561— WordPress < 6.3.2 - Unauthenticated Post Author Email Disclosure
Quick assessment
Affected
WordPress WordPress
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 Popup Builder 4.1.15 版本及之前版本存在信息泄露漏洞，该漏洞源于在将某些字段回显至页面之前，没有经过充分的转义和清理。
Public Exploits 1
Nuclei · 1
CVE-2023-5561.yaml [template]
Possible ATT&CK Techniques 1 AI
T1018 · Remote System Discovery
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I. Basic Information for CVE-2023-5561
Vulnerability Information
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Vulnerability Title
WordPress < 6.3.2 - Unauthenticated Post Author Email Disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
WordPress does not properly restrict which user fields are searchable via the REST API, allowing unauthenticated attackers to discern the email addresses of users who have published public posts on an affected website via an Oracle style attack
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Popup Builder 信息泄露漏洞
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 Popup Builder 4.1.15 版本及之前版本存在信息泄露漏洞，该漏洞源于在将某些字段回显至页面之前，没有经过充分的转义和清理。
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
II. Public POCs for CVE-2023-5561
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | WordPress does not properly restrict which user fields are searchable via the REST API, allowing unauthenticated attackers to discern the email addresses of users who have published public posts on an affected website via an Oracle style attack | https://github.com/pog007/CVE-2023-5561-PoC | POC Details |
| 2 | Updated POC for Unauth Post Author Email Disclosures WordPress CVE-2023-5561 | https://github.com/rootxsushant/CVE-2023-5561-POC-Updated | POC Details |
| 3 | WordPress Core is vulnerable to Sensitive Information Exposure in versions between 4.7.0 and 6.3.1 via the User REST endpoint. While the search results do not display user email addresses unless the requesting user has the 'list_users' capability, the search is applied to the user_email column. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-5561.yaml | POC Details |
| 4 | CVE-2023-5561-PoC | https://github.com/dthkhang/CVE-2023-5561-PoC | POC Details |
AI-Generated POC
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Vendor Advisories for CVE-2023-5561 (2)
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https://wpscan.com/blog/email-leak-oracle-vulnerability-addressed-in-wordpress-6-3-2/ technical-description
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https://wpscan.com/vulnerability/19380917-4c27-4095-abf1-eba6f913b441 exploit vdb-entry technical-description
Mailing List Discussions for CVE-2023-5561 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2023-5561
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