Cross-Site Request Forgery Vulnerability in Theme Editor for WordPress
CVE-2025-9890

8.8HIGH

Key Information:

Vendor

WordPress
Status
Theme Editor
Vendor
CVE Published:
18 October 2025

What is CVE-2025-9890?

The Theme Editor plugin for WordPress contains a Cross-Site Request Forgery vulnerability due to inadequate nonce validation on the 'theme_editor_theme' page. This flaw allows attackers to exploit the vulnerability and potentially execute remote code by tricking site administrators into performing actions through malicious links. This security lapse can compromise site integrity and pose serious risks if unaddressed.

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Deploy the Patch

Affected Version(s)

Theme Editor * <= 3.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/theme-editor/t...
https://plugins.trac.wordpress.org/changeset?sfp_email=&s...

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jonas Benjamin Friedli
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