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Instant CSS <= 1.1.4 - Missing Authorization via AJAX Actions
| CVE | CVE-2023-38483 |
|---|---|
| CVSS | 5.3 (Medium) |
| Publicly Published | July 24, 2023 |
| Last Updated | July 28, 2023 |
| Researcher |
Abdi Pranata
|
Description
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.
References
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Vulnerability Details for Instant CSS
| Software Type | Plugin |
|---|---|
| Software Slug | instant-css (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.1.5, or a newer patched version |
| Affected Version |
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| Patched Version |
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