// For flags

CVE-2024-4655

Ultimate Blocks < 3.1.9 - Contributor+ Stored XSS

Severity Score

6.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

The Ultimate Blocks WordPress plugin before 3.1.9 does not validate and escape some of its block options before outputting them back in a page/post where the block is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

El complemento Ultimate Blocks de WordPress anterior a 3.1.9 no valida ni escapa algunas de sus opciones de bloqueo antes de devolverlas a una página/publicación donde está incrustado el bloque, lo que podría permitir a los usuarios con el rol de colaborador y superiores realizar ataques de Cross Site Scripting almacenado.

The Ultimate Blocks – WordPress Blocks Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's "tabbed-content-block" feature in all versions up to, and including, 3.1.7 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

*Credits: Dmitrii Ignatyev, WPScan
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
Poc
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-05-08 CVE Reserved
  • 2024-06-20 CVE Published
  • 2024-07-13 EPSS Updated
  • 2024-08-01 CVE Updated
  • 2024-08-01 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Unknown
Search vendor "Unknown"
 Ultimate Blocks
Search vendor "Unknown" for product "Ultimate Blocks"
 < 3.1.9
Search vendor "Unknown" for product "Ultimate Blocks" and version " < 3.1.9"
en
Affected