Arbitrary file upload in Theme Demo Import
CVE-2026-13157
The Demo Import WordPress plugin through 1.1.3 does not validate the type of files uploaded during demo-content import (the WordPress file-type test is disabled), allowing high-privilege users (Administrator by default, including non-super-admin site administrators on multisite) to upload executable PHP files to the uploads directory.
Vulnerability class: Unrestricted File Upload
EPSS: 0.003 (28.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Unknown Theme Demo Import — versions 0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- contact@wpscan.com (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-13157?
- CVE-2026-13157 is a high-severity vulnerability in Theme Demo Import, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.2/10. Published 2026-08-01.
- How severe is CVE-2026-13157?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2026-13157 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.