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WordPress plugin

iThemes Sync <= 2.0.17 — Authentication Bypass

6fb01045-d38f-469f-8aaf-ff8882132accPublished · Updated

Action summary

Affected: <2.0.18Update to 2.0.18 or newer

All remediation steps
Watch plugin
Severity
Critical9.8
CVSS
9.8
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/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:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:H Confidentiality
High
I:H Integrity
High
A:H Availability
High
Weakness
CWE-286 Incorrect User Management
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Kadence Central – Site Management, Backups, Security, and Reporting ithemes-sync

  1. Affected< 2.0.18
  2. Patched in2.0.18

Update to 2.0.18 or newer.

You are affected if you run < 2.0.18. Version 2.0.18 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Kadence Central – Site Management, Backups, Security, and Reporting.
  • 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 2.0.18, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Kadence Central – Site Management, Backups, Security, and Reporting to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence.

The iThemes Sync plugin for WordPress is vulnerable to authentication bypass due to a missing validation on the secure key in versions up to, and including, 2.0.17. This makes it possible for unauthenticated attackers to add their own secure key leading to a complete compromise of the affected website.

Exploits & references

Proof-of-concept & detection

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

Advisories & patches

More in Kadence Central – Site Management, Backups, Security, and Reporting

All 4
More vulnerabilities in Kadence Central – Site Management, Backups, Security, and Reporting
SeverityVulnerabilityCVEPublished
Medium4.3Missing Authorization
≤3.2.8Update to 3.2.9
CVE-2026-27056
Medium5.4Stored Cross-Site Scripting via packages
<3.0.1Update to 3.0.1
—
Medium4.3Cross-Site Request Forgery and Missing Authorization via 'hide_authenticate_notice'
<2.1.14Update to 2.1.14
CVE-2023-40001

Timeline

  1. CVE published

    Severity critical, CVSS 9.8

  2. Record last updated

Sources & licenses

Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
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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