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Vulnerability record · CVE-2021-39174 · published 28 August 2021

CVE-2021-39174: Catchethq catchet vulnerability

CCatchethq · Catchet

Cachet is an open source status page system. Prior to version 2.5.1, 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). This issue was addressed in version 2.5.1 by improving `UpdateConfigCommandHandler` and preventing the use of nested variables in the resulting dotenv configuration file. As a workaround, only allow trusted source IP addresses to access to the administration dashboard.

8.8 CVSS 3.1 High EPSS 5.0% · top 8.1% CWE-75 · CWE-75
8.8CVSS 3.1 base score, v2 6.5
5.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Cachet is an open source status page system. Prior to version 2.5.1, 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). This issue was addressed in version 2.5.1 by improving `UpdateConfigCommandHandler` and preventing the use of nested variables in the resulting dotenv configuration file. As a workaround, only allow trusted source IP addresses to access to the administration dashboard.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/ ExploitThird Party Advisory
https://github.com/fiveai/Cachet/releases/tag/v2.5.1 Release NotesThird Party Advisory
https://github.com/fiveai/Cachet/security/advisories/GHSA-88f9-7xxh-c688 Third Party Advisory
https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/ ExploitThird Party Advisory
https://github.com/fiveai/Cachet/releases/tag/v2.5.1 Release NotesThird Party Advisory
https://github.com/fiveai/Cachet/security/advisories/GHSA-88f9-7xxh-c688 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-39174), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.