CVE-2024-5853 CRITICAL

CVE-2024-5853: Image Optimizer, Resizer and CDN – Sirv <= 7.2.6 - Authenticated (Contributor+) Arbitrary File Upload

Vendor Sirv
Product Image Optimizer, Resizer and CDN – Sirv
Weakness CWE-434 · Unrestricted file upload
Published June 19, 2024
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

9.9/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 19, 2024 CVE published
April 8, 2026 Record updated