CVE-2023-45889: Classlink Oneclick

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

A Universal Cross Site Scripting (UXSS) vulnerability in ClassLink OneClick Extension through 10.8 allows remote attackers to inject JavaScript into any webpage. NOTE: this issue exists because of an incomplete fix for CVE-2022-48612.

Affected products

• Classlink Oneclick: up to and including 10.8

Published 2024-01-23. Last modified 2026-06-17.