CVE-2025-15158
Published: 07 January 2026
Summary
CVE-2025-15158 is a high-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Wordpress (inferred from references). Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 34.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2025-15158, published on 2026-01-07, is an arbitrary file upload vulnerability in the WP Enable WebP plugin for WordPress, affecting all versions up to and including 1.0. The flaw arises from improper file type validation in the `wpse_file_and_ext_webp` function, classified under CWE-434. It carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity due to its potential for significant impact on confidentiality, integrity, and availability.
Authenticated attackers with Author-level access or higher can exploit this vulnerability over the network with low complexity and no user interaction required. By bypassing file type checks, they can upload arbitrary files to the affected site's server, which may lead to remote code execution.
Advisories and additional details are available from Wordfence at https://www.wordfence.com/threat-intel/vulnerabilities/id/fa53c5ee-fe7f-4fb2-baaa-2c1a151d4b2c?source=cve and the WordPress plugin trac browser at https://plugins.trac.wordpress.org/browser/wp-enable-webp/trunk/wp-enable-webp.php?rev=1998897#L43, which points to the vulnerable code location.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-1268
Vulnerability details
The WP Enable WebP plugin for WordPress is vulnerable to arbitrary file uploads due to improper file type validation in the 'wpse_file_and_ext_webp' function in all versions up to, and including, 1.0. This makes it possible for authenticated attackers, with Author-level…
more
access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Arbitrary file upload vulnerability in a public-facing WordPress plugin directly enables exploitation of public-facing applications (T1190), potentially leading to remote code execution.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly counters the improper file type validation in the wpse_file_and_ext_webp function by enforcing comprehensive input validation for file uploads.
Requires timely patching and remediation of the known flaw in the WP Enable WebP plugin, eliminating the arbitrary file upload vulnerability.
Deploys malicious code protection at upload entry points to detect and eradicate arbitrary malicious files that could lead to remote code execution.