Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in coolercontrol-ui

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Summary

CVECVE-2026-5301
StatePUBLISHED
AssignerGitLab
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-08 13:16:43 UTC
Updated2026-04-16 00:47:16 UTC
DescriptionStored 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

Risk And Classification

Primary CVSS: v3.1 6.1 MEDIUM from [email protected]

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

EPSS: 0.000280000 probability, percentile 0.080990000 (date 2026-04-21)

Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary6.1MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1[email protected]Secondary7.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L
3.1CNACVSS7.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Coolercontrol Coolercontrold All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA CoolerControl Coolercontrol-ui affected 2.0.0 4.0.0 semver Not specified

References

ReferenceSourceLinkTags
gitlab.com/coolercontrol/coolercontrol/-/releases/4.0.0 [email protected] gitlab.com Release Notes
gitlab.com/coolercontrol/coolercontrol/-/blob/2.0.0/coolercontrol-ui/src... [email protected] gitlab.com Product
gitlab.com/coolercontrol/coolercontrol/-/blob/3.1.1/coolercontrol-ui/src... [email protected] gitlab.com Product
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: https://gitlab.com/lassi-3 (en)

Additional Advisory Data

Solutions

CNA: Upgrade to version 4.0.0

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