# DRUPAL-CONTRIB-2021-031: The module provides a field widget for selecting taxonomy terms in a hierarchical fashion.

> An attacker with taxonomy editing permissions can inject scripts via unsanitized input, potentially compromising user sessions.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 22 Sep 2021

## What is DRUPAL-CONTRIB-2021-031?

DRUPAL-CONTRIB-2021-031 is a cross-site scripting vulnerability in drupal/cshs, published on 22 Sep 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

The module provides a field widget for selecting taxonomy terms in a hierarchical fashion.

The module doesn't sanitize user input in certain cases, leading to a possible Cross-Site-Scripting (XSS) vulnerability.

This vulnerability is mitigated by the fact that an attacker must have a role with permission to create or edit taxonomy terms to which the widget may apply.

## Which versions are affected by DRUPAL-CONTRIB-2021-031?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `drupal/cshs` | Packagist:https://packages.drupal.org/8 | All versions | 3.5.0 |

## How do I fix DRUPAL-CONTRIB-2021-031?

Upgrade to a fixed version.

## Is DRUPAL-CONTRIB-2021-031 being exploited?

There is no known exploitation of DRUPAL-CONTRIB-2021-031 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for DRUPAL-CONTRIB-2021-031 and fix it if it is affected.

What it is: DRUPAL-CONTRIB-2021-031 is a cross-site scripting vulnerability in drupal/cshs, published on 22 Sep 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of DRUPAL-CONTRIB-2021-031 in the wild and no public exploit code.

Affected product: drupal/cshs. 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-2021-031/ (Markdown: https://insights.sbomify.com/DRUPAL-CONTRIB-2021-031/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/DRUPAL-CONTRIB-2021-031

---
From sbomify Insights: https://insights.sbomify.com/DRUPAL-CONTRIB-2021-031/
Summaries are generated and may contain mistakes; the official description above is the record.