# CVE-2018-20028: Contao Information Disclosure via Access Control Flaws

Source: https://junglewise.ai/threats/cve-2018-20028-contao-information-disclosure-via-access-control-flaws  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-13  
License: CC BY 4.0 with a link back

CVE-2018-20028 · Severity: low · CVSS 3 · Published 2022-05-13

Contao Information Disclosure via Access Control Flaws

Technologies: [contao/contao (Packagist)](https://junglewise.ai/threats/technologies/contao-contao). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2018-20028 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2018-20028 being exploited in the wild.

**How severe is CVE-2018-20028?** Low severity, with a CVSS score of 3, published 13 May 2022.

**Which products and versions are affected?** contao/contao (Packagist) ECOSYSTEM:introduced=3.0.0,fixed=3.5.37.

**Is there a fix for CVE-2018-20028?** Yes. contao/contao (Packagist): upgrade to 3.5.37 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2018-20028?** Check whether you run contao/contao (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- contao/contao (Packagist): upgrade to 3.5.37 or later

  ```sh
  composer require contao/contao:^3.5.37
  ```


## Affected products

- contao/contao (Packagist) ECOSYSTEM:introduced=3.0.0,fixed=3.5.37

## Identifiers

- CVE-2018-20028
- GHSA-q99w-j4mj-7hj8

## Related threats

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- [Contao CMS credential leak in crawler component](https://junglewise.ai/threats/cve-2026-55824-contao-cms-credential-leak-in-crawler-component)
- [Contao does not properly manage privileges for page and article fields](https://junglewise.ai/threats/cve-2025-57759-contao-does-not-properly-manage-privileges-for-page-and-article)
- [Contao can disclose sensitive information in the news module](https://junglewise.ai/threats/cve-2025-57757-contao-can-disclose-sensitive-information-in-the-news-module)