Medium (6.1) in nhn toast ui grid. EPSS 0.7% chance of exploitation in the next 30 days. Fixed in tui-grid 4.21.3.
Toast UI Grid is a component to display and edit data. Versions prior to 4.21.3 are vulnerable to cross-site scripting attacks when pasting specially crafted content into editable cells. This issue was fixed in version 4.21.3. There are no known workarounds.
Severity
CVSS 3.1
6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)