// For flags

CVE-2023-38483

WordPress Instant CSS plugin <= 1.1.4 - Broken Access Control vulnerability

Severity Score

5.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Missing Authorization vulnerability in Dylan Blokhuis Instant CSS allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Instant CSS: from n/a through 1.1.4.

The Instant CSS plugin for WordPress is vulnerable to unauthorized access and modification of data due to missing capability checks on several functions called via AJAX actions in the ~/classes/class.instantcss_ajax.php file in versions up to, and including, 1.1.4. This makes it possible for authenticated attackers, with subscriber-level access and above, to perform a wide variety of actions such as retrieving css, theme, and minify data, along with updating the options for those. The unprotected AJAX actions present can be used to exploit a site via Cross-Site Scripting as well.

*Credits: Abdi Pranata (Patchstack Alliance)
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-07-18 CVE Reserved
  • 2023-07-24 CVE Published
  • 2024-12-13 CVE Updated
  • 2024-12-14 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-862: Missing Authorization
CAPEC
  • CAPEC-180: Exploiting Incorrectly Configured Access Control Security Levels
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Instant Css
Search vendor "Instant Css"
 Instant Css
Search vendor "Instant Css" for product "Instant Css"
 >= 0.0.0 <= 1.1.4
Search vendor "Instant Css" for product "Instant Css" and version " >= 0.0.0 <= 1.1.4"
en
Affected