TI-2021-16560 Aliases CVE-2021-39174 GHSA-88f9-7xxh-c688

Configuration leak

MEDIUM 46CWE-75Published 2021-08-27 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

EPSS 0.05011 92nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Cachet (fiveai): 2.5.1cachethq/cachet (Packagist): 2.5.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
fiveai	Cachet	before 2.5.1	2.5.1	Patch available	CNA
—	cachethq/cachet (Packagist)	before 2.5.1	2.5.1	Patch available	GHSA-88f9-7xxh-c688

Cachet Vendorfiveai Affected before 2.5.1 Fixed in 2.5.1 Patch available CNA
cachethq/cachet (Packagist) Vendor— Affected before 2.5.1 Fixed in 2.5.1 Patch available GHSA-88f9-7xxh-c688

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:catchethq:catchet::::::::	before 2.5.1	Vulnerable	Catchethq

cpe:2.3:a:catchethq:catchet:*:*:*:*:*:*:*:* Versions before 2.5.1 Vulnerable ·Catchethq

Remediation

Fix · CNA Cachet (fiveai) Fixed in 2.5.1
Fix · GHSA-88f9-7xxh-c688 cachethq/cachet (Packagist) Fixed in 2.5.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2021-39174
2026-10-03 Alias added: GHSA-88f9-7xxh-c688

References

Exploit 1

https://blog.sonarsource.com/cachet-code-execution-via-laravel-configuration-injection/

Advisory 3

Other 2

TI-2021-16558 New line injection during configuration edition CVSS 3.1HIGH 8.8
TI-2021-16559 Forced reinstall CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences