What is CVE-2026-5364?

CVE-2026-5364 is a high-severity vulnerability in Addonsorg Drag And Drop File Upload For Contact Form 7, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.1/10. Published 2026-04-24.

How severe is CVE-2026-5364?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2026-5364 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Addonsorg Drag And Drop File Upload For Contact Form 7

CVE-2026-5364

The Drag and Drop File Upload for Contact Form 7 plugin for WordPress is vulnerable to arbitrary file upload in versions up to, and including, 1.1.3. This is due to the plugin extracting the file extension before sanitization occurs and allowing the file type parameter to be controlled by the attacker rather than being restricted to administrator-configured values, which when combined with the fact that validation occurs on the unsanitized extension while the file is saved with a sanitized extension, allows special characters like '$' to be stripped during the save process. This makes it possible for unauthenticated attackers to upload arbitrary PHP files and potentially achieve remote code execution, however, an .htaccess file and name randomization is in place which restricts real-world exploitability.

Vulnerability class: Unrestricted File Upload

Published 2026-04-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: +0.001

Affected products

Addonsorg Drag And Drop File Upload For Contact Form 7 — versions 0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

xxconi/CVE-2026-5364

References

Frequently asked questions

What is CVE-2026-5364?: CVE-2026-5364 is a high-severity vulnerability in Addonsorg Drag And Drop File Upload For Contact Form 7, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.1/10. Published 2026-04-24.
How severe is CVE-2026-5364?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2026-5364 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.