CVE-2026-5301

| EUVD-2026-20459 HIGH
2026-04-08 GitLab GHSA-6vr8-827j-mg8v
7.6
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
Low

Lifecycle Timeline

3
Analysis Generated
Apr 08, 2026 - 13:16 vuln.today
EUVD ID Assigned
Apr 08, 2026 - 13:16 euvd
EUVD-2026-20459
CVE Published
Apr 08, 2026 - 12:04 nvd
HIGH 7.6

Tags

XSS

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

Analysis

Stored cross-site scripting (XSS) in CoolerControl UI log viewer enables complete service takeover when unauthenticated remote attackers inject malicious JavaScript into log entries, which execute when viewed by administrators or users. Affects coolercontrol-ui versions 2.0.0 through 3.x, patched in version 4.0.0. …

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Remediation

Within 24 hours: Inventory all CoolerControl UI deployments and identify instances running versions 2.0.0-3.x; restrict administrative access to the log viewer to trusted personnel only. Within 7 days: Upgrade all affected instances to CoolerControl UI version 4.0.0 or later. …

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Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +38
POC: 0

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CVE-2026-5301 vulnerability details – vuln.today
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