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VulnerabilityPublished

CVE-2026-5301: coolercontrol-ui · Cross-site Scripting

Affects coolercontrol-uiSource CVE Database V5

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Not known to be exploited · CVSS 7.6 High : upgrade to 4.0.0 soon.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
7.6High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.0.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade coolercontrol-ui to 4.0.0.

Affected software

ProductAffectedFixed in
CoolerControlcoolercontrol-uiAffected
  • >=2.0.0 <4.0.0
Fixed in
  • 4.0.0

AI-suggested

In the meantime, restricting access to the log viewer interface and sanitizing or validating log inputs may reduce exposure.

Description

CVE-2026-5301 is a stored cross-site scripting (XSS) vulnerability in the log viewer component of CoolerControl's coolercontrol-ui versions prior to 4.0.0. This vulnerability allows unauthenticated attackers to inject malicious JavaScript into log entries, which can lead to service takeover. The vulnerability has a high severity with a CVSS score of 7.6. There are no known exploits in the wild at this time.

References

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