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Vulnerability record · CVE-2026-5300 · published 8 April 2026

CVE-2026-5300: Coolercontrold missing authentication for critical function vulnerability

Coolercontrol · Coolercontrold

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

9.1 CVSS 3.1 Critical EPSS 0.28% · top 81.7% CWE-306 · Missing authentication for critical function
9.1CVSS 3.1 base score
0.28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
24 Jul 2026Last modified by NVD

Description

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.1CVE-2026-5302Coolercontrold vulnerabilityCORS misconfiguration in CoolerControl/coolercontrold <4.0.0 allows unauthenticated remote attackers to read data and send commands to the service vi…EPSS 0.38%7.2CVE-2026-5208Coolercontrold os command injection vulnerabilityCommand injection in alerts in CoolerControl/coolercontrold <4.0.0 allows authenticated attackers to execute arbitrary code as root via injected bash…EPSS 1.5%6.1CVE-2026-5301Coolercontrold cross-site scripting vulnerabilityStored XSS in log viewer in CoolerControl/coolercontrol-ui <4.0.0 allows unauthenticated attackers to take over the service via malicious JavaScript …EPSS 0.37%8.8CVE-2026-67277MikroTik RouterOS btest missing authentication leaks kernel memory and crashes kernelRouterOS accepts a "related" btest connection before the primary session is authenticated, letting an unauthenticated client start an IPv4 UDP test. …KEVEPSS 1.6%analysed8.8CVE-2026-59822LiteLLM MCP endpoint auth bypass via OAuth2 passthrough fallbackLiteLLM's MCP Streamable HTTP endpoint, prior to 1.84.0, let an unauthenticated attacker send a fabricated Authorization header that triggered an OAu…KEVEPSS 0.84%analysed9.3CVE-2026-72529TrueConf Server missing authentication allows remote script executionTrueConf Server versions 5.3.X through 5.3.9, 5.4.X through 5.4.9, 5.5.X through 5.5.5, and earlier expose an undocumented function on port 4307/TCP …KEVEPSS 1.5%analysed9.8CVE-2026-46817Oracle E-Business Suite Payments missing authentication allows takeoverOracle Payments in Oracle E-Business Suite 12.2.3 through 12.2.15 contains an easily exploitable flaw in the File Transmission component. An unauthen…KEVEPSS 0.81%analysed9.8CVE-2026-56164Microsoft SharePoint Server missing authentication allows privilege elevationMicrosoft Office SharePoint Server contains a missing authentication flaw in a critical function (CWE-306), letting an unauthenticated attacker reach…KEVEPSS 1.0%analysed

Source: NIST National Vulnerability Database (record CVE-2026-5300), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.