CVE-2026-5301
Received Received - Intake
Stored XSS in CoolerControl Log Viewer Allows Service Takeover

Publication date: 2026-04-08

Last updated on: 2026-04-16

Assigner: GitLab Inc.

Description
Stored XSS in log viewer in CoolerControl/coolercontrol-ui <4.0.0 allows unauthenticated attackers to take over the service via malicious JavaScript in poisoned log entries
CVSS Scores
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Meta Information
Published
2026-04-08
Last Modified
2026-04-16
Generated
2026-06-16
AI Q&A
2026-04-08
EPSS Evaluated
2026-06-14
NVD
CVE-2026-5301
EUVD
EUVD-2026-20459
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
coolercontrol coolercontrold to 4.0.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
KEV Icon
CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Impact Analysis

The impact of this vulnerability includes potential unauthorized control over the CoolerControl service.

Because the vulnerability allows execution of malicious JavaScript without authentication, attackers can compromise the integrity and availability of the service.

Specifically, the CVSS score indicates low complexity to exploit (AC:L), no privileges required (PR:N), and can lead to high impact on integrity and low impact on availability.

Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue found in the log viewer component of CoolerControl's coolercontrol-ui versions prior to 4.0.0.

It allows unauthenticated attackers to inject malicious JavaScript code into log entries, which are then stored and later executed when viewed.

As a result, attackers can take over the service by exploiting this malicious script execution.

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