PatchTheCVECVE-2026-5300: Unauthenticated functionality in CoolerControl/coolercontrold <4.0.0 allows unauthenticated attackers to view
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Routine
MEDIUM 5.9UPGRADE
CVE-2026-5300 is a medium-severity flaw (CVSS 5.9) affecting coolercontrold. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Unauthenticated functionality in CoolerControl/coolercontrold <4.0.0 allows unauthenticated attackers to view and modify potentially sensitive data via HTTP requests
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.9 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 81%) |
| CISA exploited list | No |
| Weakness | CWE-306 |
| Published | 2026-04-08 |
| Last modified | 2026-10-23 |
Publisher (CNA): GitLab Inc. · Vendor: coolercontrol
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
coolercontrol coolercontrold UPGRADE
Affected: < 4.0.0
Fixed in: 4.0.0
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy coolercontrold || rpm -q coolercontrold || coolercontrold --version
2. UPGRADE to 4.0.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade coolercontrold
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade coolercontrold
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Related CVEs
- CVE-2026-5208 HIGH 8.2 UPGRADE Command injection in alerts in CoolerControl/coolercontrold <4.0.0 allows authenticated attackers to execute a
- CVE-2026-5302 MEDIUM 6.3 UPGRADE CORS misconfiguration in CoolerControl/coolercontrold <4.0.0 allows unauthenticated remote attackers to read d
- CVE-2026-5301 HIGH 7.6 UPGRADE Stored XSS in log viewer in CoolerControl/coolercontrol-ui <4.0.0 allows unauthenticated attackers to take ove