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.
CVE-2017-9140
Score 6.1 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 6.1; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.1
- EG Score
- 6.1(medium)
- EPSS
- 94.9%
- KEV
- Not listed
Published
May 22, 2017
Last Modified
May 13, 2026
References (6)
- cve@mitrehttp://www.telerik.com/support/whats-new/reporting/release-history/telerik-reporting-r1-2017-sp2-%28version-11-0-17-406%29
- cve@mitrehttps://knowledgebase.progress.com/articles/Article/Security-Advisory-for-Resolving-Security-vulnerabilities-September-2018
- cve@mitrehttps://www.veracode.com/blog/research/anatomy-cross-site-scripting-flaw-telerik-reporting-module
- af854a3a-2127-422b-91ae-364da2661108http://www.telerik.com/support/whats-new/reporting/release-history/telerik-reporting-r1-2017-sp2-%28version-11-0-17-406%29
- af854a3a-2127-422b-91ae-364da2661108https://knowledgebase.progress.com/articles/Article/Security-Advisory-for-Resolving-Security-vulnerabilities-September-2018
- af854a3a-2127-422b-91ae-364da2661108https://www.veracode.com/blog/research/anatomy-cross-site-scripting-flaw-telerik-reporting-module
Data Freshness Timeline
(refreshed 10× in last 7d / 41× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-07 13:42 UTCEPSS rescore
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- 2026-05-22 13:09 UTCEG score recompute
- 2026-05-22 13:09 UTCGHSA enrichment
- 2026-05-21 22:40 UTCEPSS rescore
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Publicly available exploits
(1 reference)Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Nucleihttp/cves/2017/CVE-2017-9140.yamlFirst seen Jan 1, 2017
Reflected XSS - Telerik Reporting Module
Open source ↗
Frequently asked(5)
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Dependency Blast Radius
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