CVE-2026-5300 PUBLISHED

Missing Authentication for Critical Function in coolercontrold

Assigner: GitLab
Reserved: 01.04.2026 Published: 08.04.2026 Updated: 08.04.2026

Unauthenticated functionality in CoolerControl/coolercontrold <4.0.0 allows unauthenticated attackers to view and modify potentially sensitive data via HTTP requests

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS Score: 5.9

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	CoolerControl
Product	coolercontrold
Versions	Default: unaffected affected from 0.14.0 to 4.0.0 (excl.)

Solutions

Upgrade to version 4.0.0

Credits

https://gitlab.com/lassi-3 finder

References

https://gitlab.com/coolercontrol/coolercontrol/-/blob/3.1.1/coolercontrold/src/api/router.rs?ref_type=tags
https://gitlab.com/coolercontrol/coolercontrol/-/releases/4.0.0

Problem Types

CWE-306: Missing Authentication for Critical Function CWE