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Vulnerability record · CVE-2026-6261 · published 5 May 2026

CVE-2026-6261: Unrestricted file upload vulnerability

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.

8.8 CVSS 3.1 High EPSS 0.79% · top 45.7% CWE-434 · Unrestricted file upload Deferred
8.8CVSS 3.1 base score
0.79%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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

References

LinkTags
https://support.muffingroup.com/changelog/
https://www.wordfence.com/threat-intel/vulnerabilities/id/722c04c3-8f74-4081-b3a4-cb1ae2027312?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-6261), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.