5.3
MEDIUM
CVE-2023-5561
WordPress Username Email Disclosure 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

INFO

Published Date :

Oct. 16, 2023, 8:15 p.m.

Last Modified :

Nov. 20, 2023, 11:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2023-5561 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2023-5561 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Wordpress wordpress
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-5561.

URL Resource
https://lists.debian.org/debian-lts-announce/2023/11/msg00014.html
https://wpscan.com/blog/email-leak-oracle-vulnerability-addressed-in-wordpress-6-3-2/ Exploit Third Party Advisory
https://wpscan.com/vulnerability/19380917-4c27-4095-abf1-eba6f913b441 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

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

Python

Updated: 2 months, 2 weeks ago
4 stars 3 fork 3 watcher
Born at : Dec. 13, 2023, 4:43 p.m. This repo has been linked 1 different CVEs too.

A proof-of-concept tool for extracting email addresses from WordPress sites by abusing misfeatures in the REST API.

security wordpress

Python

Updated: 11 months, 3 weeks ago
1 stars 0 fork 0 watcher
Born at : June 19, 2023, 1:53 p.m. This repo has been linked 1 different CVEs too.

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 2 months, 2 weeks ago
6375 stars 1107 fork 1107 watcher
Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 904 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-5561 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-5561 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 20, 2023

    Action Type Old Value New Value
    Added Reference WPScan https://lists.debian.org/debian-lts-announce/2023/11/msg00014.html [No types assigned]
  • CVE Modified by [email protected]

    Nov. 08, 2023

    Action Type Old Value New Value
    Changed Description The Popup Builder WordPress plugin through 4.1.15 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup). 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
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Removed CWE WPScan CWE-200
  • Initial Analysis by [email protected]

    Oct. 20, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    Changed Reference Type https://wpscan.com/blog/email-leak-oracle-vulnerability-addressed-in-wordpress-6-3-2/ No Types Assigned https://wpscan.com/blog/email-leak-oracle-vulnerability-addressed-in-wordpress-6-3-2/ Exploit, Third Party Advisory
    Changed Reference Type https://wpscan.com/vulnerability/19380917-4c27-4095-abf1-eba6f913b441 No Types Assigned https://wpscan.com/vulnerability/19380917-4c27-4095-abf1-eba6f913b441 Third Party Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 4.7 up to (excluding) 4.7.27 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 4.8 up to (excluding) 4.8.23 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 4.9 up to (excluding) 4.9.24 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.0 up to (excluding) 5.0.20 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.1 up to (excluding) 5.1.17 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.2 up to (excluding) 5.2.19 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.3 up to (excluding) 5.3.16 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.4 up to (excluding) 5.4.14 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.5.13 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.6 up to (excluding) 5.6.12 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.7 up to (excluding) 5.7.10 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.8 up to (excluding) 5.8.8 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 5.9 up to (excluding) 5.9.8 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 6.0 up to (excluding) 6.0.6 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 6.1 up to (excluding) 6.1.4 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 6.2 up to (excluding) 6.2.3 *cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* versions from (including) 6.3 up to (excluding) 6.3.2
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-5561 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-5561 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

1.13 }} 0.10%

score

0.85210

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability