What is the CVSS score of CVE-2024-5853?

CVE-2024-5853 has a CVSS 3.1 base score of 9.9 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 10.5%.

Is there a patch available for CVE-2024-5853?

Yes, a patch is available for CVE-2024-5853. Update the affected software to the latest version immediately.

Sirv CVE-2024-5853

CRITICAL

Unrestricted Upload of File with Dangerous Type (CWE-434)

2024-06-19 security@wordfence.com

RCE WordPress File Upload Sirv

9.9

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.9 CRITICAL

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch released

Apr 08, 2026 - 19:39 nvd

Patch available

CVE Published

Jun 19, 2024 - 06:15 nvd

CRITICAL 9.9

DescriptionCVE.org

The Image Optimizer, Resizer and CDN - Sirv plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the sirv_upload_file_by_chanks AJAX action in all versions up to, and including, 7.2.6. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.

AnalysisAI

The Image Optimizer, Resizer and CDN - Sirv plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the sirv_upload_file_by_chanks AJAX action in all. Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, low attack complexity. Epss exploitation probability 10.5%.

Technical ContextAI

This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. The Image Optimizer, Resizer and CDN - Sirv plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the sirv_upload_file_by_chanks AJAX action in all versions up to, and including, 7.2.6. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible. Affected products include: Sirv.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.