CVE-2026-83545CoolClock < 4.3.8 - Contributor+ Stored XSS via Custom Skin JSON
Updated under an hour ago ()
Does this affect you?
It affects Unknown CoolClock. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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The CoolClock WordPress plugin before 4.3.8 does not properly escape a custom skin setting before outputting it inside an inline script, allowing users with contributor-level access and above to inject arbitrary JavaScript that executes when the content is viewed.
- CVSS
- 6.8 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- WPScan
- NVD analysis
- Deferred
- Record last updated
- Sep 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Unknown CoolClock unknown:coolclock (from the name) | before 4.3.8 | CNA record |
References
- https://wpscan.com/vulnerability/d331d834-08f7-46e2-859a-7b797213ad0b/exploit, vdb-entry, technical-description
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.