CVE-2026-5302

MEDIUM 6.3

Permissive Cross-domain Policy with Untrusted Domains in coolercontrold

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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

CWE	CWE-942
Vendor	coolercontrol
Product	coolercontrold
Published	Apr 8, 2026
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

CoolerControl / coolercontrold

2.0.0 < 4.0.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gitlab.com: https://gitlab.com/coolercontrol/coolercontrol/-/blob/2.0.0/coolercontrold/src/api/mod.rs?ref_type=tags#L374 gitlab.com: https://gitlab.com/coolercontrol/coolercontrol/-/releases/4.0.0

Credits

https://gitlab.com/lassi-3