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Medium · 6.8 CVE-2026-83545 EUVD-2026-75956GHSA-rp7h-v4qm-gcfw

CoolClock < 4.3.8 - Contributor+ Stored XSS via Custom Skin JSON

Published Sep 11, 2026 · Updated Sep 11, 2026 · Assigned by WPScan

Description

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.

Affected products

VendorProductAffectedFixed
— CoolClock < 4.3.8 4.3.8

References