Medium · CVSS 5.4CVE-2026-106151

Cross-Site Scripting in Validator Validation Messages in Kendo UI for jQueryCVE-2026-106151

Answer in brief

CVE-2026-106151 records a Medium severity (CVSS 5.4) vulnerability in Cross-Site Scripting in Validator Validation Messages in Kendo UI for jQuery. The current sources do not mark it as known exploited. The current feed maps Progress Software/Kendo UI for jQuery (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 15, 2026Updated Oct 15, 2026Source checked Oct 15, 2026First seen by HOL Oct 15, 2026Material review Oct 15, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.4
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 5.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Progress Software/Kendo UI for jQuery (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Progress Software/Kendo UI for jQuerygeneric	>=2012.2.710 <2026.3.1015	2026.3.1015

Recommended response

Check inventory. Check lockfiles and deployed manifests for Progress Software/Kendo UI for jQuery.
Review the reported fix. Update Progress Software/Kendo UI for jQuery to 2026.3.1015 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 15, 2026

Sources and claim methodology

Source referencetelerik.com

Upstream source description

In Progress® Kendo® UI for jQuery versions starting with 2012.2.710 and prior to 2026.3.1015, the Validator decodes validation messages from data-msg-* attributes and parses the resulting text as HTML. An attacker who can modify a validation message can cause HTML that was correctly escaped in the page attribute to become active markup, including event handlers, when the user triggers validation. Successful exploitation can execute JavaScript in a user's browser and compromise the confidentiality and integrity of data accessible to the affected application. This issue is fixed in version 2026.3.1015.

Quoted source text, attributed separately from HOL analysis.