CVE-2026-26171 — Uncontrolled Resource Consumption in Microsoft NET 10.0

CWE-400 — Uncontrolled Resource ConsumptionCWE-611 — XML External Entity (XXE) InjectionCWE-776 — XML Entity Expansion9 documents6 sources
Severity
7.5HIGHNVD
EPSS
0.6%
top 30.80%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Microsoft NET 10.0Microsoft NET 8.0Microsoft NET 9.0
Timeline
PublishedApr 14
Latest updateApr 15

Description

Uncontrolled resource consumption in .NET allows an unauthorized attacker to deny service over a network.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶CVEListV5microsoft/net_8.08.0.0 — 8.0.26
▶CVEListV5microsoft/net_9.09.0.0 — 9.0.15
▶CVEListV5microsoft/net_10.010.0.0 — 10.0.6

🔴Vulnerability Details

2
CVEList
.NET Denial of Service Vulnerability↗2026-04-14
▶
GHSA
Microsoft Security Advisory CVE-2026-26171 – .NET Denial of Service Vulnerability↗2026-04-14
▶

📋Vendor Advisories

2
Ubuntu
.NET vulnerabilities↗2026-04-15
▶
Red Hat
dotnet: .NET: Security Bypass and Denial of Service Vulnerability↗2026-04-14
▶

💬Community

4
Bugzilla
CVE-2026-26171 dotnet9.0: .NET: Security Bypass and Denial of Service Vulnerability [fedora-all]↗2026-04-14
▶
Bugzilla
CVE-2026-26171 dotnet8.0: .NET: Security Bypass and Denial of Service Vulnerability [fedora-all]↗2026-04-14
▶
Bugzilla
CVE-2026-26171 dotnet10.0: .NET: Security Bypass and Denial of Service Vulnerability [fedora-all]↗2026-04-14
▶
Bugzilla
CVE-2026-26171 dotnet: .NET: Security Bypass and Denial of Service Vulnerability↗2026-04-13
▶
CVE-2026-26171 — Uncontrolled Resource Consumption | cvebase