CVE-2026-69651
dotnet9.0: dotnet: dotnet10.0: dotnet8.0: .NET Denial of Service Vulnerability
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 14, 2026
Updated · October 30, 2026
Description
Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
Statement
This vulnerability is rated as an Important impact for Red Hat products because an unauthenticated remote attacker can cause a denial of service via resource exhaustion without requiring elevated privileges or user interaction. In Red Hat environments, exposure is limited to .NET applications and services that parse untrusted XML signatures using the SignedXml implementation. Applications that do not accept untrusted XML documents or do not perform digital signature verification on untrusted data are not susceptible to this flaw.
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
No mitigation is specified in collected source.
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-776 · Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')