What is CVE-2026-106135?

CVE-2026-106135 is a medium-severity vulnerability in Progress Software Kendo Ui For Angular, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-11-06.

How severe is CVE-2026-106135?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Progress Software Kendo Ui For Angular

CVE-2026-106135

Cross-Site Scripting (XSS) in the Chat component (@progress/kendo-angular-conversational-ui) in Progress Software Kendo UI for Angular versions prior to 25.3.0 allows a low-privileged attacker who can supply Chat messages to execute arbitrary JavaScript in another user's browser via an unsafe URL in an openUrl quick action, which runs when the user clicks the action.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-11-06 · last modified 2026-11-06.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Progress Software Kendo Ui For Angular

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.telerik.com/kendo-angular-ui/components/knowledge-base/kb-security-chat-xss… (vendor-advisory)

Frequently asked questions

What is CVE-2026-106135?: CVE-2026-106135 is a medium-severity vulnerability in Progress Software Kendo Ui For Angular, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-11-06.
How severe is CVE-2026-106135?: Medium severity. CVSS v3 base score is 5.4 out of 10.