The Betheme theme for WordPress is vulnerable to Arbitrary File Upload in versions up to, and including, 28.4. This is due to the upload_icons() function workflow moving and unzipping user-controlled ZIP files into a public uploads directory without validating extracted file types. This makes it possible for authenticated attackers, with author-level access and above, to upload arbitrary files (including PHP) and achieve remote code execution via the Icons icon-pack upload flow.
CVE-2026-6261 is a high severity with CVSS 8.8 Remote Code Execution issue affecting the Theme Betheme. It affects Versions up to 28.4 and is fixed in 28.4.1.
Use the related hub and response guides to connect this CVE-2026-6261 report with patch validation, scanner checks, and site hardening work.
Open the grouped hub for related CVEs, affected ranges, severity mix, and patch coverage.
Check access, XML-RPC exposure, backup readiness, and monitoring after patching.
Use containment, evidence capture, remediation, and validation steps when exploit risk is high.
CVE-2026-6261 is tracked for the Theme Betheme as high severity with CVSS 8.8. The affected range is Versions up to 28.4. Update Betheme to 28.4.1 or newer where that version is compatible with the site.
Search engines and operators need more than a title. This page exposes the identifier, affected range, patch evidence, and source coverage that make the vulnerability actionable.
This report has a CVE identifier, which makes it suitable for focused search and vulnerability triage workflows.
Affected version data gives operators a concrete comparison point against installed WordPress software.
A fixed version is present, so the page can answer update and remediation intent directly.
External references are available for source validation, advisory review, and incident notes.
Use these checks when converting this record into a patch ticket, incident note, or risk acceptance decision.
Inventory the installed Theme package and compare its version with Versions up to 28.4.
Confirm Betheme is updated to 28.4.1 or newer.
Review references and CVSS vector details for exploitability, authentication requirements, and exposure path.
After patching, re-run vulnerability monitoring and keep the related plugin or theme hub under review for follow-up CVEs.
| Software Type | Theme |
|---|---|
| Software Slug |
betheme
View on wordpress.org
|
| CVE | CVE-2026-6261 |
| Patched Versions |
28.4.1
|
| Affected Versions |
Versions up to 28.4
|
These internal links group the same WordPress theme by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Betheme <= 27.5.6 - Authenticated (Contributor+) PHP Object Injection
Betheme <= 26.6.2 - Missing Authorization Check on Core Functionality
Betheme <= 26.5.1.4 - Authenticated (Subscriber+) PHP Object Injection
Betheme <= 26.5.1.4 - Authenticated (Subscriber+) PHP Object Injection
Betheme <= 28.4 - Authenticated (Contributor+) Arbitrary File Deletion via 'mfn-icon-upload'
Betheme <= 27.1.1 - Missing Authorization via '_tool_history_delete'
Betheme <= 28.1.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'page_title'
Betheme <= 28.2 - Authenticated (Contributor+) Stored Cross-Site Scripting
This record contains material that is subject to copyright
License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. Read more
License: CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy. Read more
