CVE-2026-6261: high-severity vulnerability in MuffinGroup Betheme
Betheme <= 28.4 - Authenticated (Author+) Arbitrary File Upload to Remote Code Execution via Icon Pack Upload
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
MuffinGroup · BethemeRelated CVEs — MuffinGroup Betheme
In the same product, most dangerous first.
CVE-2022-3861HIGHBetheme <= 26.5.1.4 - Authenticated (Subscriber+) PHP Object InjectionEPSS 2.2%CVE-2024-2694HIGHBetheme <= 27.5.6 - Authenticated (Contributor+) PHP Object InjectionEPSS 0.6%CVE-2024-5647MEDIUMMultiple Plugins <= (Various Versions) - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via Magnific Popups JavaScript LibraryEPSS 0.4%CVE-2026-6178MEDIUMBetheme <= 28.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'icon_box_2' ShortcodeEPSS 0.4%CVE-2026-6262MEDIUMBetheme <= 28.4 - Authenticated (Contributor+) Arbitrary File Deletion via 'mfn-icon-upload'EPSS 0.3%CVE-2024-5567MEDIUMBetheme | Responsive Multipurpose WordPress & WooCommerce Theme <= 27.5.5 - Authenticated (Author+) Stored Cross-Site Scripting via SVG FileEPSS 0.3%