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Vulnerabilities

Vulnerability · CVE-2026-5302

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

Published Apr 8, 2026 · catalog updated Jul 24, 2026 · CORS misconfiguration in CoolerControl/coolercontrold

Check if you run it

No confirmed exploitation is on record for CVE-2026-5302. EPSS is 0.38%. Act only if a listed version of CORS misconfiguration in CoolerControl/coolercontrold is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (CORS misconfiguration in CoolerControl/coolercontrold).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.38%
Remediation
Version ranges on file
Affected products
cpe coolercontrol/coolercontrold · stated coolercontrold

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe coolercontrol/coolercontroldversion unspecified
  • stated coolercontrold< 4.0.0

How to fix CVE-2026-5302

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-5302. EPSS is 0.38%. Act only if a listed version of CORS misconfiguration in CoolerControl/coolercontrold is installed.

Which versions are affected?

Compare what you have installed with < 4.0.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-942: Permissive Cross-domain Policy with Untrusted Domains. EPSS 0.38%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 8, 2026 · NIST NVD

    Detected

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

  2. Jul 24, 2026 · NIST NVD

    Updated

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

Sources

  • CVE.orgVulnerability recordCVE-2026-5302

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-5302

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-5302

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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.