CVE-2026-124969Optimole deserialization of untrusted data

What it is

Serialized objects from outside are turned back into live objects, which a crafted payload can abuse to run code.

How it is reached

An attacker can exploit it over the network, without an account, but someone has to act first, such as opening a file or following a link.

What an attacker gains

A successful attack can take it offline. In practice, this kind of flaw lets an attacker turn crafted data into code execution inside the receiving service.

Is it being exploited?

There is no public report of exploitation yet.

What to do

1. No fixed version is listed yet. Find every place Optimole runs, watch the references for a fix, and plan a replacement if it is no longer supported.
2. While there is no fix, keep it off the internet or behind a VPN, allowlist or authenticating proxy.
3. Warn the people who use it, and filter files and links on the way in.

Description from NVD

The Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the replace_urls_in_value function in all versions up to, and including, 4.2.19. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). Successful exploitation requires PEAR's Archive_Tar library to be present and loadable on the host (common in official WordPress Docker images and many PHP distributions), and an administrator must subsequently use the plugin's Rename control on any attachment after the attacker has staged a malicious payload in a comment. Successful exploitation additionally requires an action by an administrator — the attacker cannot trigger the vulnerability on their own.