# 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.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N`)
- **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 available:** No
- **Published:** 18 Jun 2026
- **Updated:** 18 Jun 2026
- **Also known as:** GHSA-xh6r-5wcf-38f6

## 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 (Cross-Site Request Forgery)

## 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:

- https://github.com/AlexMihailEngineer/CVE-2026-11784-Optimole-CSRF (github_poc): https://github.com/AlexMihailEngineer/CVE-2026-11784-Optimole-CSRF

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-11784 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-11784 in the wild and no public exploit code.

Affected product: Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-11784/ (Markdown: https://insights.sbomify.com/CVE-2026-11784/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-11784
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-11784
- OSV: https://osv.dev/vulnerability/CVE-2026-11784

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-11784/
Summaries are generated and may contain mistakes; the official description above is the record.