# DRUPAL-CONTRIB-2023-010: The Media Responsive Thumbnail module allows media reference fields to be rendered as a responsive image.

> An attacker with low privileges can view thumbnails of media items they are not authorized to access due to missing entity access checks.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 15 Mar 2023

## What is DRUPAL-CONTRIB-2023-010?

DRUPAL-CONTRIB-2023-010 is a missing authorization vulnerability in drupal/media_responsive_thumbnail, published on 15 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Media Responsive Thumbnail module allows media reference fields to be rendered as a responsive image.

This module does not properly check entity access prior to rendering media. This may result in users seeing thumbnails of media items they do not have access to.

This release was coordinated with [SA-CORE-2023-002](https://www.drupal.org/sa-core-2023-002).

## Which versions are affected by DRUPAL-CONTRIB-2023-010?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `drupal/media_responsive_thumbnail` | Packagist:https://packages.drupal.org/8 | All versions | 1.5.0 |

## How do I fix DRUPAL-CONTRIB-2023-010?

Upgrade to a fixed version.

## Is DRUPAL-CONTRIB-2023-010 being exploited?

There is no known exploitation of DRUPAL-CONTRIB-2023-010 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for DRUPAL-CONTRIB-2023-010 and fix it if it is affected.

What it is: DRUPAL-CONTRIB-2023-010 is a missing authorization vulnerability in drupal/media_responsive_thumbnail, published on 15 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of DRUPAL-CONTRIB-2023-010 in the wild and no public exploit code.

Affected product: drupal/media_responsive_thumbnail. 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/DRUPAL-CONTRIB-2023-010/ (Markdown: https://insights.sbomify.com/DRUPAL-CONTRIB-2023-010/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/DRUPAL-CONTRIB-2023-010

---
From sbomify Insights: https://insights.sbomify.com/DRUPAL-CONTRIB-2023-010/
Summaries are generated and may contain mistakes; the official description above is the record.