Quick answers
- Is CVE-2026-124686 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-124686 being exploited in the wild.
- How severe is CVE-2026-124686?
- Medium severity, with a CVSS score of 5.4, published 11 November 2026.
- Which products and versions are affected?
- Progress Kendo UI for jQuery prior to 2026.4.1111.
- Is there a fix for CVE-2026-124686?
- Yes: fixed in 2026.4.1111. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-124686 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-124686?
- Check whether you run Progress Kendo UI for jQuery at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: 2026.4.1111
Technical details
The kendo.init() function unsafely compiles data-* attribute values using new Function() when invalid JSON is supplied, enabling arbitrary JavaScript injection. An attacker with low privileges who can control these attributes (e.g., via stored data or page parameters) can execute code in the context of a user's browser session. The vulnerability affects Kendo UI for jQuery prior to version 2026.4.1111.
Affected products
- Progress Kendo UI for jQuery prior to 2026.4.1111
Timeline
- 2026-11-11: advisory