CoolerControl coolercontrold up to 3.x HTTP Request missing authentication

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in CoolerControl coolercontrold up to 3.x. This vulnerability affects unknown code of the component HTTP Request Handler. This manipulation causes missing authentication. This vulnerability is tracked as CVE-2026-5300. The attack is restricted to local execution. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in CoolerControl coolercontrold up to 3.x. It has been declared as critical. Affected by this vulnerability is an unknown code of the component HTTP Request Handler. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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

It is possible to read the advisory at gitlab.com. This vulnerability is known as CVE-2026-5300 since 04/01/2026. The exploitation appears to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 4.0.0 eliminates this vulnerability. The upgrade is hosted for download at gitlab.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.9
CNA Vector (GitLab): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: coolercontrold 4.0.0

Timelineinfo

04/01/2026 CVE reserved
04/08/2026 +7 days Advisory disclosed
04/08/2026 +0 days VulDB entry created
04/08/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: gitlab.com
Status: Confirmed

CVE: CVE-2026-5300 (🔒)
GCVE (CVE): GCVE-0-2026-5300
GCVE (VulDB): GCVE-100-356227

Entryinfo

Created: 04/08/2026 15:27
Changes: 04/08/2026 15:27 (65)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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