// For flags

CVE-2023-5561

WordPress < 6.3.2 - Unauthenticated Post Author Email Disclosure

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

3
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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

El complemento Popup Builder de WordPress hasta la versión 4.1.15 no sanitiza ni escapa a algunas de sus configuraciones, lo que podría permitir a usuarios con privilegios elevados, como el administrador, realizar ataques de Cross-Site Scripting almacenados incluso cuando la capacidad unfiltered_html no está permitida (por ejemplo, en una configuración multisitio).

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. This can allow unauthenticated attackers to brute force or verify the email addresses of users with published posts or pages on the site.

*Credits: Marc Montpas, WPScan
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-10-12 CVE Reserved
  • 2023-10-12 CVE Published
  • 2023-12-13 First Exploit
  • 2024-08-02 CVE Updated
  • 2024-11-04 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 4.7 < 4.7.27
Search vendor "Wordpress" for product "Wordpress" and version " >= 4.7 < 4.7.27"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 4.8 < 4.8.23
Search vendor "Wordpress" for product "Wordpress" and version " >= 4.8 < 4.8.23"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 4.9 < 4.9.24
Search vendor "Wordpress" for product "Wordpress" and version " >= 4.9 < 4.9.24"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 5.0 < 5.0.20
Search vendor "Wordpress" for product "Wordpress" and version " >= 5.0 < 5.0.20"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 5.1 < 5.1.17
Search vendor "Wordpress" for product "Wordpress" and version " >= 5.1 < 5.1.17"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 5.2 < 5.2.19
Search vendor "Wordpress" for product "Wordpress" and version " >= 5.2 < 5.2.19"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 5.3 < 5.3.16
Search vendor "Wordpress" for product "Wordpress" and version " >= 5.3 < 5.3.16"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 5.4 < 5.4.14
Search vendor "Wordpress" for product "Wordpress" and version " >= 5.4 < 5.4.14"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 5.5 < 5.5.13
Search vendor "Wordpress" for product "Wordpress" and version " >= 5.5 < 5.5.13"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 5.6 < 5.6.12
Search vendor "Wordpress" for product "Wordpress" and version " >= 5.6 < 5.6.12"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 5.7 < 5.7.10
Search vendor "Wordpress" for product "Wordpress" and version " >= 5.7 < 5.7.10"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 5.8 < 5.8.8
Search vendor "Wordpress" for product "Wordpress" and version " >= 5.8 < 5.8.8"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 5.9 < 5.9.8
Search vendor "Wordpress" for product "Wordpress" and version " >= 5.9 < 5.9.8"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 6.0 < 6.0.6
Search vendor "Wordpress" for product "Wordpress" and version " >= 6.0 < 6.0.6"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 6.1 < 6.1.4
Search vendor "Wordpress" for product "Wordpress" and version " >= 6.1 < 6.1.4"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 6.2 < 6.2.3
Search vendor "Wordpress" for product "Wordpress" and version " >= 6.2 < 6.2.3"
-
Affected
Wordpress
Search vendor "Wordpress"
Wordpress
Search vendor "Wordpress" for product "Wordpress"
>= 6.3 < 6.3.2
Search vendor "Wordpress" for product "Wordpress" and version " >= 6.3 < 6.3.2"
-
Affected