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Description

The Theme Editor plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.0. This is due to missing or incorrect nonce validation on the 'theme_editor_theme' page. This makes it possible for unauthenticated attackers to achieve remote code execution via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

PUBLISHED Reserved 2025-09-02 | Published 2025-10-18 | Updated 2025-10-18 | Assigner Wordfence




HIGH: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Problem types

CWE-352 Cross-Site Request Forgery (CSRF)

Product status

Default status
unaffected

*
affected

Timeline

2025-10-17:Disclosed

Credits

Jonas Benjamin Friedli finder

References

www.wordfence.com/...-b794-41a0-8fc0-3320032c2f69?source=cve

plugins.trac.wordpress.org/...ontroller/theme_controller.php

plugins.trac.wordpress.org/...e-editor&sfp_email=&sfph_mail=

cve.org (CVE-2025-9890)

nvd.nist.gov (CVE-2025-9890)

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