CVE-2026-5302 PUBLISHED

Permissive Cross-domain Policy with Untrusted Domains in coolercontrold

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

CORS misconfiguration in CoolerControl/coolercontrold <4.0.0 allows unauthenticated remote attackers to read data and send commands to the service via malicious websites

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS Score: 6.3

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

CVSS 3.1

Product Status

Vendor	CoolerControl
Product	coolercontrold
Versions	Default: unaffected affected from 2.0.0 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/2.0.0/coolercontrold/src/api/mod.rs?ref_type=tags#L374
https://gitlab.com/coolercontrol/coolercontrol/-/releases/4.0.0

Problem Types

CWE-942: Permissive Cross-domain Policy with Untrusted Domains CWE