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JetBackup – WP Backup, Migrate & Restore <= 1.3.9 — Cross-Site Request Forgery to Arbitrary File Upload

CVE-2020-36669Published · Updated

Action summary

Affected: ≤1.3.9Update to 1.4.0 or newer

All remediation steps
Watch plugin
Severity
High8.8
CVSS
8.8
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:R User interaction
Required
S:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-352 CSRF
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

JetBackup – Backup, Restore & Migrate backup

  1. Affected≤ 1.3.9
  2. Patched in1.4.0

Update to 1.4.0 or newer.

You are affected if you run ≤ 1.3.9. Version 1.4.0 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under JetBackup – Backup, Restore & Migrate.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 1.4.0, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch JetBackup – Backup, Restore & Migrate to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Chloe Chamberland.

The JetBackup – WP Backup, Migrate & Restore plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including 1.3.9. This is due to missing nonce validation on the backup_guard_get_import_backup() function. This makes it possible for unauthenticated attackers to upload arbitrary files to the vulnerable site's server via a forged request, granted they can trick a site's administrator into performing an action such as clicking on a link.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in JetBackup – Backup, Restore & Migrate

All 13
More vulnerabilities in JetBackup – Backup, Restore & Migrate
SeverityVulnerabilityCVEPublished
Medium4.7Authenticated (Admin+) Arbitrary File Write
≤3.1.24.9Update to 3.1.24.10
CVE-2026-104068
Medium6.33.1.23.3 - Authenticated (Subscriber+) Privilege Escalation
3.1.7.9 – 3.1.23.3Update to 3.1.23.5
CVE-2026-19453
Medium4.93.1.23.3 - Authenticated (Admin+) Backup Download
3.1.18.8 – 3.1.23.3Update to 3.1.23.5
CVE-2026-19454
Medium4.9Authenticated (Administrator+) Arbitrary Directory Deletion via Path Traversal in 'fileName' Parameter
≤3.1.19.8Update to 3.1.20.3
CVE-2026-4853
Critical9.8Sensitive Information Exposure via Directory Listing
≤2.0.9.7Update to 2.0.9.9
CVE-2023-7165

Same weakness (CSRF)

All CSRF
Other CSRF vulnerabilities
SeverityVulnerabilityCVEPublished
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
CVE-2026-120688
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
CVE-2026-125055
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
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity high, CVSS 8.8

  2. 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.

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