CVE-2023-38483 MEDIUM

CVE-2023-38483: WordPress Instant CSS plugin <= 1.1.4 - Broken Access Control vulnerability

Vendor Dylan Blokhuis

Product Instant CSS

Weakness CWE-862 · Missing authorization

Published December 13, 2024

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

5.4/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality None

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

Instant CSS versions up to 1.1.4 lack proper authorization checks, allowing authenticated users with low privileges to modify or disable site functionality. An attacker with a basic user account can alter CSS settings without proper permission validation. This affects the integrity and availability of the site's styling and configuration.

What an attacker can do

03Attacker Capabilities

Modify or disable CSS settings and site styling without proper authorization.

Potential impact on your site

04Site Impact

Unauthorized users can alter your site's appearance and styling, potentially breaking layouts or disabling critical CSS functionality.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege user account on the site; no user interaction required.

Key dates

06Disclosure timeline

December 13, 2024 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-38483 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/862.html AskarLabs — CWE-862 write-up Missing Authorization

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