WP BackItUp Community Edition <= 2.1.0 — Authenticated (Administrator+) Path Traversal to Arbitrary File Read via 'backup_file' Parameter
CVE-2026-18386Published · Updated Action summary
Affected: ≤2.1.0No patch available
What to do until a fix ships- Severity
- Medium4.9
- CVSS
- 4.9CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:HPrivileges required- High
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:NIntegrity- None
A:NAvailability- None
- Weakness
- CWE-22 Path Traversal
- Required access
- Unknown
- Exploit prediction (EPSS)
- 1.1% chance in 30 days66th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
WP BackItUp Community Edition wp-backitup
- Affected≤ 2.1.0
- PatchedNo fix yet
No patched version available.
You are affected if you run ≤ 2.1.0. No fixed version has been released.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WP BackItUp Community Edition.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch WP BackItUp Community Edition to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Nikola Kojic.
The WP BackItUp Community Edition plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.1.0 via the 'backup_file' parameter parameter. This makes it possible for authenticated attackers, with administrator-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. The basename() normalization present in the handler only executes when the traversed target path does not exist, providing no protection against reads of existing files.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in WP BackItUp Community Edition
All 8| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Missing Authorization ≤2.1.0No patch available | CVE-2025-68039 | |
| Medium4.3 | Missing Authorization ≤1.50Update to 2.0.0 | CVE-2024-43268 | |
| Medium5.3 | Missing Authorization ≤1.50Update to 2.0.0 | CVE-2024-43270 | |
| Medium6.5 | Cross-Site Request Forgery to Backup Trigger ≤1.50Update to 2.0.0 | CVE-2024-43269 | |
| Medium5.3 | Unauthenticated Information Exposure via Log Files ≤1.45Update to 1.50 | CVE-2023-7232 |
- Medium5.3Missing Authorization
≤2.1.0No patch available
- Medium4.3Missing Authorization
≤1.50Update to 2.0.0
- Medium5.3Missing Authorization
≤1.50Update to 2.0.0
- Medium6.5Cross-Site Request Forgery to Backup Trigger
≤1.50Update to 2.0.0
- Medium5.3Unauthenticated Information Exposure via Log Files
≤1.45Update to 1.50
Same weakness (Path Traversal)
All Path Traversal| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 4.9
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.