CVE-2026-32482
Published: 25 March 2026
Summary
CVE-2026-32482 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability. Its CVSS base score is 9.9 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 23.5th 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-2026-32482 is an Unrestricted Upload of File with Dangerous Type vulnerability (CWE-434) in the Ona WordPress theme developed by deothemes. It allows attackers to upload web shells to the web server. The vulnerability affects all versions of the Ona theme from n/a through those prior to 1.24. Published on 2026-03-25, it has a CVSS v3.1 base score of 9.9 (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H), indicating critical severity due to its network accessibility, low complexity, and potential for high impact across confidentiality, integrity, and availability with a changed scope.
An authenticated attacker with low privileges (PR:L) can exploit this vulnerability remotely over the network without user interaction. By uploading a malicious file such as a web shell, the attacker gains the ability to execute arbitrary code on the server, potentially achieving full compromise including high-level data access, modification, and disruption.
Patchstack advisories indicate that the vulnerability is addressed in Ona theme version 1.24, recommending immediate updates to this or later versions for mitigation.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-15823
Vulnerability details
Unrestricted Upload of File with Dangerous Type vulnerability in deothemes Ona ona allows Upload a Web Shell to a Web Server.This issue affects Ona: from n/a through < 1.24.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Unrestricted file upload vuln in public-facing WordPress theme directly enables remote exploitation (T1190) and web shell deployment for arbitrary code execution (T1505.003).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly prevents unrestricted uploads of dangerous file types like web shells by enforcing validation of file content, extensions, and types at input points.
Mitigates the vulnerability by requiring identification, reporting, and timely remediation of the specific flaw in Ona theme versions prior to 1.24 via patching.
Provides defense-in-depth against uploaded web shells by deploying mechanisms to detect and eradicate malicious code on the web server.