CVE-2021-39172

Cachet is an open source status page system. Prior to version 2.5.1, authenticated users, regardless of their privileges (User or Admin), can exploit a new line injection in the configuration edition feature (e.g. mail settings) and gain arbitrary code execution on the server. This issue was addressed in version 2.5.1 by improving `UpdateConfigCommandHandler` and preventing the use of new lines characters in new configuration values. As a workaround, only allow trusted source IP addresses to access to the administration dashboard.

• CWE-93

• https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/Exploit, Third Party Advisory
• https://github.com/fiveai/Cachet/releases/tag/v2.5.1Release Notes, Third Party Advisory
• https://github.com/fiveai/Cachet/security/advisories/GHSA-9jxw-cfrh-jxq6Third Party Advisory
• https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/Exploit, Third Party Advisory
• https://github.com/fiveai/Cachet/releases/tag/v2.5.1Release Notes, Third Party Advisory
• https://github.com/fiveai/Cachet/security/advisories/GHSA-9jxw-cfrh-jxq6Third Party Advisory

Published

Aug 27, 2021

Last Modified

Jun 17, 2026

Status

Modified

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