Nov 2026: ASP.NET Core Information Disclosure Vulnerability
CVE-2026-109476 Published on November 10, 2026
ASP.NET Core Information Disclosure Vulnerability
Improper encoding or escaping of output in ASP.NET Core allows an unauthorized attacker to disclose information over a network.
Vulnerability Analysis
Weakness Type
What is an Output Sanitization Vulnerability?
The software prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.
CVE-2026-109476 has been classified to as an Output Sanitization vulnerability or weakness.
Products Associated with CVE-2026-109476
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Affected Versions
Microsoft .NET 10.0 installed on Linux:- Version 10.0.0 and below 10.0.15 is affected.
- Version 10.0.0 and below 10.0.15 is affected.
- Version 10.0.0 and below 10.0.15 is affected.
- Version 11.0.0-preview.1 and below 11.0.0 is affected.
- Version 11.0.0-preview.1 and below 11.0.0 is affected.
- Version 11.0.0-preview.1 and below 11.0.0 is affected.
- Version 8.0.0 and below 8.0.34 is affected.
- Version 8.0.0 and below 8.0.34 is affected.
- Version 8.0.0 and below 8.0.34 is affected.
- Version 9.0.0 and below 9.0.23 is affected.
- Version 9.0.0 and below 9.0.23 is affected.
- Version 9.0.0 and below 9.0.23 is affected.
- Version 17.14.0 and below 17.14.45 is affected.
- Version 18.11.0 and below 18.11.4 is affected.
- Version 18.12.0 and below 18.12.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.