# CVE-2026-106138: Cross-Site Scripting via Chart Tooltip in KendoReact

> An attacker can inject malicious JavaScript into KendoReact chart tooltips, executing code in users' browsers to compromise data confidentiality and integrity.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 10 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** GHSA-76j6-f7qm-jhqv

## What is CVE-2026-106138?

CVE-2026-106138 is a medium-severity cross-site scripting vulnerability in Progress Software KendoReact, published on 10 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

In Progress® KendoReact (@progress/kendo-react-charts) starting with version 1.1.0 and prior to 16.2.0, the default Chart tooltip renders the formatted point value as raw HTML without encoding, in both the single-point and the shared tooltip. An attacker with low privileges who can influence a string value bound to the chart can supply HTML containing event handlers that execute JavaScript in a user's browser when the user hovers over the affected data point. Successful exploitation can compromise the confidentiality and integrity of data accessible to the affected application.

Weakness: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page)

## Which versions are affected by CVE-2026-106138?


## How do I fix CVE-2026-106138?

No fix has been published for CVE-2026-106138 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-106138 being exploited?

There is no known exploitation of CVE-2026-106138 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-106138 and fix it if it is affected.

What it is: CVE-2026-106138 is a medium-severity cross-site scripting vulnerability in Progress Software KendoReact, published on 10 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-106138 in the wild and no public exploit code.

Affected product: Progress Software KendoReact. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-106138/ (Markdown: https://insights.sbomify.com/CVE-2026-106138/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-106138
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-106138
- OSV: https://osv.dev/vulnerability/CVE-2026-106138

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-106138/
Summaries are generated and may contain mistakes; the official description above is the record.