CVE-2021-39174

HIGH8.8EPSS 51.7%

Cachet configuration leak

Published: 8/30/2021Modified: 3/13/2026
Also known as:GHSA-88f9-7xxh-c688

Description

### Impact Authenticated users, regardless of their privileges (_User_ or _Admin_), can leak the value of any configuration entry of the dotenv file, e.g. the application secret (`APP_KEY`) and various passwords (email, database, etc). ### Patches This issue was addressed by improving `UpdateConfigCommandHandler` and preventing the use of nested variables in the resulting dotenv configuration file. ### Workarounds Only allow trusted source IP addresses to access to the administration dashboard. ### References Further technical details are available at [https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection](https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection). ### For more information If you have any questions or comments about this advisory, you can contact: - The original reporters, by sending an email to vulnerability.research [at] sonarsource.com; - The maintainers, by opening an issue on this repository.

Affected packages (1)

CVSS scores

SourceVersionSeverityVector
osvCVSS 3.1HIGH8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References (5)