Cross-Site Scripting in Validator Validation Messages in Kendo UI for jQuery

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.

Scores

EPSS (exploitation in 30 days)

0.18% · top 93% of all CVEs (7 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.

Weakness

• CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) (opens in a new tab)All about CWE-80 and its CVEs

Affected products

• Progress Software · Kendo UI for jQuery

  • affected 2012.2.710 – < 2026.3.1015

References (1)

• https://www.telerik.com/kendo-jquery-ui/documentation/knowledge-base/kb-security-validator-message-xss-cve-2026-106151 (opens in a new tab)vendor-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-106151](https://trackcve.app/badge/CVE-2026-106151.svg)](https://trackcve.app/cve/CVE-2026-106151)

Record last updated 15 Oct 2026, 18:12 UTC.