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WordPress plugin

Backup, Restore and Migrate WordPress Sites With the XCloner Plugin 4.2.1 — 4.2.12 - Unprotected AJAX Actions

CVE-2020-35948Published · Updated

Action summary

Affected: 4.2.1 – 4.2.12Update to 4.2.153 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:L/UI:N/S:U/C:H/I:H/A:H
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:L Privileges required
Low
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-862 Missing Authorization
Required access
Unknown
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Backup, Restore and Migrate your sites with XCloner xcloner-backup-and-restore

  1. Affected4.2.1 – 4.2.12
  2. Patched in4.2.153

Update to 4.2.153 or newer.

You are affected if you run 4.2.1 – 4.2.12. Version 4.2.153 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Backup, Restore and Migrate your sites with XCloner.
  • No admin access? Run a passive check of your site. It reads public files only.

What to do

  1. Update to version 4.2.153, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Backup, Restore and Migrate your sites with XCloner to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Chloe Chamberland.

An issue was discovered in the XCloner Backup and Restore plugin before 4.2.13 for WordPress. It gave authenticated attackers the ability to modify arbitrary files, including PHP files. Doing so would allow an attacker to achieve remote code execution. The xcloner_restore.php write_file_action could overwrite wp-config.php, for example. Alternatively, an attacker could create an exploit chain to obtain a database dump.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in Backup, Restore and Migrate your sites with XCloner

All 17
More vulnerabilities in Backup, Restore and Migrate your sites with XCloner
SeverityVulnerabilityCVEPublished
Medium4.3Authenticated (Subscriber+) Information Exposure
≤4.8.6Update to 4.8.7
CVE-2026-48965
Medium4.3Cross-Site Request Forgery in Xcloner_Remote_Storage:save()
≤4.8.2Update to 4.8.3
CVE-2025-11759
Medium5.3Unauthenticated Full Path Disclosure
≤4.7.3Update to 4.7.4
CVE-2024-6559
Critical9.8Unauthenticated Plugin Settings Reset
≤4.2.16Update to 4.3.6
CVE-2022-0444
Critical9.8Cross-Site Request Forgery
<4.2.153Update to 4.2.153
CVE-2020-35950

Same weakness (Missing Authorization)

All Missing Authorization
Other Missing Authorization 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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