Instant CSS <= 1.1.4 - Missing Authorization via AJAX Actions
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.
Betroffene Software
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| Plattform | Paket | Anfällige Versionen | Behoben in |
|---|---|---|---|
| WordPress-Plugin | Instant CSS | <= 1.1.4 | 1.1.5 |
Verweise
- CVSS-Vektor
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Schwäche (CWE)
CWE-862- Plattform
- WordPress
- Paket
Instant CSS- Veröffentlicht
- 24.07.2023
- Aktualisiert
- 11.10.2026 10:23
Quellen und Lizenzen
Wordfence Intelligence - b82a9ae8-ff82-40bf-a5d4-5175daab9146 - Wordfence Intelligence
Copyright 1999-2026 The MITRE Corporation
Copyright 2012-2026 Defiant Inc.
This record contains material that is subject to copyright
Copyright 1999-2026 The MITRE Corporation
CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
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Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.
https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/Wordfence Intelligence
Wordfence Intelligence - Defiant, Inc. Copyright Defiant, Inc. All rights reserved except as granted below. License grant, section 3.1 of the Wordfence Intelligence Terms and Conditions (January 26, 2026): Subject to this Agreement, Company hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute the Service. Any copy you make for such purposes is authorized provided that you reproduce Company’s copyright designation, this license, and the license of any disclosed Company licensor in any such copy. Full applicable Agreement: https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/
Schwachstellenhistorie: Instant CSS
Alle veröffentlichten Schwachstellen dieses Pakets (WordPress-Plugin), neueste zuerst. Zeigt, ob es ein einmaliger Ausrutscher ist oder ein Paket, das man im Auge behalten muss.
- Einträge insgesamt
- 2
- Erste → letzte
- 07.2023 09.2023
- Ohne Fix
- 0
- In Angriffen ausgenutzt
- 0
Verteilung nach Schweregrad
- Mittel 2
Veröffentlichungen pro Jahr
- 2023: 2
- 2024: 0
- 2025: 0
- 2026: 0
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Instant CSS <= 1.1.4 - Missing Authorization via AJAX Actions dieser Eintrag
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