// For flags

CVE-2021-24988

WP RSS Aggregator < 4.19.3 - Subscriber+ Stored Cross-Site Scripting

Severity Score

5.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The WP RSS Aggregator WordPress plugin before 4.19.3 does not sanitise and escape data before outputting it in the System Info admin dashboard, which could lead to a Stored XSS issue due to the wprss_dismiss_addon_notice AJAX action missing authorisation and CSRF checks, allowing any authenticated users, such as subscriber to call it and set a malicious payload in the addon parameter.

El plugin WP RSS Aggregator de WordPress versiones anteriores a 4.19.3, no sanea y escapa de los datos antes de mostrarlos en el panel de administración de System Info, lo que podría conllevar un problema de tipo XSS almacenado debido a que la acción AJAX wprss_dismiss_addon_notice carece de comprobaciones de autorización y CSRF, permitiendo a cualquier usuario autenticado, como un suscriptor, llamarla y establecer una carga útil maliciosa en el parámetro addon

*Credits: Krzysztof Zając
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
Single
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-14 CVE Reserved
  • 2021-11-29 CVE Published
  • 2023-07-20 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
  • CWE-352: Cross-Site Request Forgery (CSRF)
  • CWE-862: Missing Authorization
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Wprssaggregator
Search vendor "Wprssaggregator"
 Wp Rss Aggregator
Search vendor "Wprssaggregator" for product "Wp Rss Aggregator"
 < 4.19.3
Search vendor "Wprssaggregator" for product "Wp Rss Aggregator" and version " < 4.19.3"
wordpress
Affected