What is CVE-2026-13189?

CVE-2026-13189 is a high-severity vulnerability in Progress Software Telerik Ui For Asp.net Ajax, classified under Absolute Path Traversal. CVSS score: 7.5/10. Published 2026-07-22.

How severe is CVE-2026-13189?

High severity. CVSS v3 base score is 7.5 out of 10.

Path Traversal in Progress Software Telerik Ui For Asp.net Ajax

CVE-2026-13189

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 req…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Progress Software Telerik Ui For Asp.net Ajax — versions 2011.2.712

Weakness classification (CWE)

CWE-36 — Absolute Path Traversal

References

security@progress.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-13189?: CVE-2026-13189 is a high-severity vulnerability in Progress Software Telerik Ui For Asp.net Ajax, classified under Absolute Path Traversal. CVSS score: 7.5/10. Published 2026-07-22.
How severe is CVE-2026-13189?: High severity. CVSS v3 base score is 7.5 out of 10.