CVE-2026-42899
dotnet: .NET: infinite loop allows an attacker to cause a denial of service
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 13, 2026
Updated · June 30, 2026
Description
A flaw was found in dotnet. An infinite loop in ASP.NET Core allows an unauthenticated remote attacker to cause a denial of service over a network. This issue can lead to an application crash and a high consumption of system resources.
Statement
As this flaw allows an unauthenticated remote attacker to cause a denial of service, it has been rated with an important severity.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')