Progress Kendo UI for jQuery up to 2026.4.1109 ActionSheet injection

Summaryinfo

A vulnerability has been found in Progress Kendo UI for jQuery up to 2026.4.1109 and classified as critical. This issue affects some unknown processing of the component ActionSheet. Performing a manipulation results in injection. This vulnerability is cataloged as CVE-2026-124689. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Progress Kendo UI for jQuery up to 2026.4.1109. This affects an unknown part of the component ActionSheet. The manipulation with an unknown input leads to a injection vulnerability. CWE is classifying the issue as CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In Progress Kendo UI for jQuery versions 2026.3.1014 up to, but not including, 2026.4.1110, ActionSheet does not encode title, subtitle, and header button label values before rendering them. An attacker who can influence these values can inject markup that executes as JavaScript when a user opens the ActionSheet. Successful exploitation may compromise the confidentiality and integrity of data available in the user's browser context. The report identifies version 2026.3.1014; the first affected release has not been established.

It is possible to read the advisory at telerik.com. This vulnerability is uniquely identified as CVE-2026-124689 since 11/09/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

Upgrading to version 2026.4.1110 eliminates this vulnerability.

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Productinfo

Type

• JavaScript Library

Vendor

• Progress

Name

• Kendo UI for jQuery

Version

• 2026.4.1109

License

• commercial

CPE 2.3info

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CPE 2.2info

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