Is CVE-2026-13189 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-13189?

CVE-2026-13189 has a CVSS v3 severity of HIGH (7.5).

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CVE-2026-13189

Description

In Progress® Telerik® UI for AJAX prior to v2026.2.708, insufficient validation of the language parameter in the spell check handler may allow an attacker to influence server-side file path resolution and trigger unintended server-side requests.