CVE-2013-5042

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 11.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-12-11 · updated 2026-06-16
Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability in Microsoft ASP.NET SignalR 1.1.x before 1.1.4 and 2.0.x before 2.0.1, and Visual Studio Team Foundation Server 2013, allows remote attackers to inject arbitrary web script or HTML via crafted Forever Frame transport protocol data, aka "SignalR XSS Vulnerability."

Affected products

Microsoft Asp.Net Signalr: 1.1.0, 1.1.1, 1.1.2, 1.1.3, 2.0.0
Microsoft Visual Studio Team Foundation Server: 2013

References

http://www.securitytracker.com/id/1029463
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-103
http://www.securitytracker.com/id/1029463
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-103

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