# DRUPAL-CONTRIB-2023-054: The Group module has the ability to make content private to specific groups.

> An authenticated user can view private content from other groups due to insufficient access control enforcement in the Drupal Group module.

- **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:** 6 Dec 2023

## What is DRUPAL-CONTRIB-2023-054?

DRUPAL-CONTRIB-2023-054 is a missing authorization vulnerability in drupal/group, published on 6 Dec 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Group module has the ability to make content private to specific groups. When viewing a list of entities, e.g. nodes, a visitor should only see those entities that are either not attached to a group or that they have group access to.

The module doesn't sufficiently enforce list access under the scenario where two users have the same outsider and insider permissions, but are members of different groups without any individual roles being assigned to said memberships. In such a scenario, the permissions hash for both will be the same even though it should differ.

This vulnerability is mitigated by the fact that an attacker must have the same hash as someone else, which is quite rare yet not unthinkable.

## Which versions are affected by DRUPAL-CONTRIB-2023-054?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `drupal/group` | Packagist:https://packages.drupal.org/8 | From 2.0.0 | 2.2.2, 3.2.2 |

## How do I fix DRUPAL-CONTRIB-2023-054?

Upgrade to a fixed version.

## Is DRUPAL-CONTRIB-2023-054 being exploited?

There is no known exploitation of DRUPAL-CONTRIB-2023-054 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for DRUPAL-CONTRIB-2023-054 and fix it if it is affected.

What it is: DRUPAL-CONTRIB-2023-054 is a missing authorization vulnerability in drupal/group, published on 6 Dec 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-2023-054 in the wild and no public exploit code.

Affected product: drupal/group. 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-2023-054/ (Markdown: https://insights.sbomify.com/DRUPAL-CONTRIB-2023-054/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/DRUPAL-CONTRIB-2023-054

---
From sbomify Insights: https://insights.sbomify.com/DRUPAL-CONTRIB-2023-054/
Summaries are generated and may contain mistakes; the official description above is the record.