CVE-2026-11784 Cross-site request forgery in Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization
Attackers can trick authenticated users into overwriting media attachments via forged requests, requiring user interaction to exploit.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-11784?
CVE-2026-11784 is a medium-severity vulnerability in Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization, published on 18 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 4.2.6. This is due to missing or incorrect nonce validation on the replace_file function. This makes it possible for unauthenticated attackers to overwrite existing media attachments with attacker-supplied file content by supplying a forged multipart POST request targeting any attachment the victim has edit_post capability over via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. The forged request requires a victim with at least Author-level privileges, as the handler enforces a current_user_can('edit_post', $id) check; tricking an Author-level or higher user into clicking a crafted link is sufficient to trigger the overwrite against attachments that user can edit.
Weakness: CWE-352
Which versions are affected by CVE-2026-11784?
How do I fix CVE-2026-11784?
No fix has been published for CVE-2026-11784 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-11784 being exploited?
There is no known exploitation of CVE-2026-11784 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-xh6r-5wcf-38f6.