Keep Backup Daily <= 2.1.1 — Authenticated (Admin+) Limited Path Traversal via 'kbd_path' Parameter
CVE-2026-3339Published · Updated Action summary
Affected: ≤2.1.1Update to 2.1.3 or newer
All remediation steps- Severity
- Low2.7
- CVSS
- 2.7CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/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:LConfidentiality- Low
I:NIntegrity- None
A:NAvailability- None
- Weakness
- CWE-22 Path Traversal
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Keep Backup Daily keep-backup-daily
- Affected≤ 2.1.1
- Patched in2.1.3
Update to 2.1.3 or newer.
You are affected if you run ≤ 2.1.1. Version 2.1.3 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Keep Backup Daily.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 2.1.3, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Keep Backup Daily to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to san6051.
The Keep Backup Daily plugin for WordPress is vulnerable to Limited Path Traversal in all versions up to, and including, 2.1.1 via the `kbd_open_upload_dir` AJAX action. This is due to insufficient validation of the `kbd_path` parameter, which is only sanitized with `sanitize_text_field()` - a function that does not strip path traversal sequences. This makes it possible for authenticated attackers, with Administrator-level access and above, to list the contents of arbitrary directories on the server outside of the intended uploads directory.
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 Keep Backup Daily
All 7| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.6 | Unauthenticated Sensitive Information Exposure ≤2.1.3Update to 2.1.4 | CVE-2026-75133 | |
| Medium4.4 | Authenticated (Admin+) Stored Cross-Site Scripting via Backup Title ≤2.1.2Update to 2.1.3 | CVE-2026-3577 | |
| Medium4.9 | Authenticated (Admin+) Arbitrary File Download ≤2.1.0Update to 2.1.1 | CVE-2025-26779 | |
| Medium5.3 | Unauthenticated Information Disclosure ≤2.0.8Update to 2.0.9 | CVE-2024-48024 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.0.3Update to 2.0.4 | — |
- Medium5.6Unauthenticated Sensitive Information Exposure
≤2.1.3Update to 2.1.4
- Medium4.4Authenticated (Admin+) Stored Cross-Site Scripting via Backup Title
≤2.1.2Update to 2.1.3
- Medium4.9Authenticated (Admin+) Arbitrary File Download
≤2.1.0Update to 2.1.1
- Medium5.3Unauthenticated Information Disclosure
≤2.0.8Update to 2.0.9
- Medium6.1Reflected Cross-Site Scripting
≤2.0.3Update to 2.0.4
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 low, CVSS 2.7
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. 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.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.