# CVE-2026-4057: Download Manager <= 3.3.51 - Missing Authorization to Authenticated (Contributor+) Media File Protection Removal

> Authenticated contributors can remove protection from any media file, exposing admin-protected content publicly due to missing ownership checks.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Apr 2026
- **Updated:** 13 Apr 2026
- **Also known as:** GHSA-5q5w-6r9g-cpgc

## What is CVE-2026-4057?

CVE-2026-4057 is a medium-severity missing authorization vulnerability in codename065 Download Manager, published on 10 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Download Manager plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `makeMediaPublic()` and `makeMediaPrivate()` functions in all versions up to, and including, 3.3.51. This is due to the functions only checking for `edit_posts` capability without verifying post ownership via `current_user_can('edit_post', $id)`, and the destructive operations executing before the admin-level check in `mediaAccessControl()`. This makes it possible for authenticated attackers, with Contributor-level access and above, to strip all protection metadata (password, access restrictions, private flag) from any media file they do not own, making admin-protected files publicly accessible via their direct URL.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-4057?


## How do I fix CVE-2026-4057?

No fix has been published for CVE-2026-4057 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4057 being exploited?

There is no known exploitation of CVE-2026-4057 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4057 and fix it if it is affected.

What it is: CVE-2026-4057 is a medium-severity missing authorization vulnerability in codename065 Download Manager, published on 10 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-4057 in the wild and no public exploit code.

Affected product: codename065 Download Manager. 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-2026-4057/ (Markdown: https://insights.sbomify.com/CVE-2026-4057/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4057
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4057
- OSV: https://osv.dev/vulnerability/CVE-2026-4057

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-4057/
Summaries are generated and may contain mistakes; the official description above is the record.