CVE-2026-5302

Permissive Cross-domain Policy with Untrusted Domains in coolercontrold

HIGH
8.1
CVSS Score
Published: April 8, 2026 at 12:05 PM UTC
Updated: October 23, 2026 at 10:10 PM UTC
1 product affected across 1 vendorCoolercontrold

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Severity
HIGH8.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versionsv < 4.0.02.0.0
Affected range stops below 4.0.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-942

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