How severe is CVE-2026-5301?

CVE-2026-5301 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity high, and availability low.

Is CVE-2026-5301 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-5301?

CVE-2026-5301 affects Coolercontrol Coolercontrold. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-5301?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-5301 have an EU (EUVD) identifier?

Yes. CVE-2026-5301 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20459.

When was CVE-2026-5301 published?

CVE-2026-5301 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-5301

CVE-2026-5301 is a high-severity vulnerability in Coolercontrol Coolercontrold with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20459
Weakness: CWE-79
Affected product: Coolercontrol Coolercontrold
Published: 2026-04-08
Last modified: 2026-06-17

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

Frequently asked questions

What is CVE-2026-5301?: 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
How severe is CVE-2026-5301?: CVE-2026-5301 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity high, and availability low.
Is CVE-2026-5301 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-5301?: CVE-2026-5301 affects Coolercontrol Coolercontrold. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-5301?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-5301 have an EU (EUVD) identifier?: Yes. CVE-2026-5301 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20459.
When was CVE-2026-5301 published?: CVE-2026-5301 was published on 2026-04-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:coolercontrol:coolercontrold:*:*:*:*:*:*:*:*

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