Backup by Supsystic <= 2.3.11 - Cross-Site Request Forgery to Arbitrary File Download/Deletion
The Backup by Supsystic plugin for WordPress is vulnerable to Arbitrary File Download and Deletion in versions up to, and including, 2.3.11. This is due to various path traversal attacks and missing CSRF checks. This makes it possible for authenticated Admin+ attackers to download and delete any file on the vulnerable server and also allows unauthenticated attackers to delete files.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Backup by Supsystic | <= 2.3.11 | 2.3.12 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H- Weakness (CWE)
CWE-352- Platform
- WordPress
- Package
Backup by Supsystic- Disclosed
- 08.02.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 7934c73c-17cf-4cec-a8da-654cee453b8f - Wordfence Intelligence
Copyright 2012-2026 Defiant Inc.
This record contains material that is subject to copyright
Copyright 2012-2026 Defiant Inc.
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/
Vulnerability history: Backup by Supsystic
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 02.2021 05.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- High 2
Disclosures per year
- 2021: 1
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 1
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Backup by Supsystic <= 2.3.11 - Cross-Site Request Forgery to Arbitrary File Download/Deletion this entry
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