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CVE-2026-5301
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in coolercontrol-ui
- 7.6HighCVSS base score
- 0.28%Exploitation in 30 daysEPSS · top 79% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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
Timeline
ID reserved
By GitLab
- 7 days later
· 7 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitLabCNA (assigner) | 3.1 | High7.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L |
| NVDNVD · Analyzed | 3.1 | Medium6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.28% · top 79% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.6.
Affected products
CoolerControl · coolercontrol-ui
- affected 2.0.0 – < 4.0.0
What to do
Solution: Upgrade to version 4.0.0
References
References3
- https://gitlab.com/coolercontrol/coolercontrol/-/blob/2.0.0/coolercontrol-ui/src/views/AppInfoView.vue?ref_type=tags#L224 (opens in a new tab)
- https://gitlab.com/coolercontrol/coolercontrol/-/blob/3.1.1/coolercontrol-ui/src/views/AppInfoView.vue?ref_type=tags#L350 (opens in a new tab)
- https://gitlab.com/coolercontrol/coolercontrol/-/releases/4.0.0 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-20459 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-5301)Record last updated .