# DRUPAL-CONTRIB-2020-030: This module enables you to hand out permissions on a smaller subset, section or community of your website.

> Attackers can bypass node access controls to read or modify content if the GroupNode plugin is used without other grant hooks.

- **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:** No
- **Published:** 29 Jul 2020

## What is DRUPAL-CONTRIB-2020-030?

DRUPAL-CONTRIB-2020-030 is a missing authorization vulnerability in drupal/group, published on 29 Jul 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

This module enables you to hand out permissions on a smaller subset, section or community of your website.

The module used to leverage the node grants system but turned it off in its recent 8.x-1.0 release in favor of a system that works for ALL entity types, not just nodes. By doing so, some regular node access checks turned from neutral into allowed because of the way the node grants system operates.

This vulnerability is mitigated by the fact that the victim must have the GroupNode plugin installed on their website and have no other `hook_node_grants()` implementations on their website aside from the one that was recently removed by Group. If you do not use the GroupNode plugin or still have `hook_node_grants()` implementing modules enabled, your site may not be affected.

## Which versions are affected by DRUPAL-CONTRIB-2020-030?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `drupal/group` | Packagist:https://packages.drupal.org/8 | From 1.0.0 to 1.0.0 | None |

## How do I fix DRUPAL-CONTRIB-2020-030?

No fix has been published for DRUPAL-CONTRIB-2020-030 yet. Limit exposure of the affected software until one is available.

## Is DRUPAL-CONTRIB-2020-030 being exploited?

There is no known exploitation of DRUPAL-CONTRIB-2020-030 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for DRUPAL-CONTRIB-2020-030 and fix it if it is affected.

What it is: DRUPAL-CONTRIB-2020-030 is a missing authorization vulnerability in drupal/group, published on 29 Jul 2020. 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-2020-030 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-2020-030/ (Markdown: https://insights.sbomify.com/DRUPAL-CONTRIB-2020-030/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/DRUPAL-CONTRIB-2020-030

---
From sbomify Insights: https://insights.sbomify.com/DRUPAL-CONTRIB-2020-030/
Summaries are generated and may contain mistakes; the official description above is the record.