Theme Editor <= 3.0 - Cross-Site Request Forgery to Remote Code Execution
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| mndpsingh287 | Theme Editor | up to 3.0 | — | No fix listed | CNA |
- Theme Editor Vendormndpsingh287 Affected up to 3.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-9890
- 2026-10-03 Alias added: GHSA-fwv9-crcm-w227
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/77189684-b794-41a0-8fc0-3320032c2f69?source=cve
- https://plugins.trac.wordpress.org/browser/theme-editor/trunk/app/controller/theme_controller.php#L87
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3379404%40theme-editor&new=3379404%40theme-editor&sfp_email=&sfph_mail=
More mndpsingh287 vulnerabilities
- TI-2024-03398 Newsletter Popup <= 1.2 - List Deletion via CSRF CVSS 3.1HIGH 8.8
- TI-2024-03396 Newsletter Popup <= 1.2 - Unauthenticated Stored XSS CVSS 3.1MEDIUM 6.1
- TI-2024-01435 File Manager <= 7.2.4 - Cross-Site Request Forgery to Local JS File Inclusion CVSS 3.1HIGH 8.8
- TI-2023-06232 File Manager And File Manager Pro (Multiple Versions) - Directory Traversal CVSS 3.1CRITICAL 9.9
- TI-2018-15331 File Manager <= 3.0 - Unauthenticated Arbitrary File Upload/Download CVSS 3.1CRITICAL 9.8
- TI-2024-00701 File Manager <= 7.2.1 - Sensitive Information Exposure via Backup Filenames CVSS 3.1HIGH 8.1
Sources
- CVE-2025-9890 · CVE Program
- CVE-2025-9890 · NVD
- FIRST EPSS
- GHSA-fwv9-crcm-w227 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences