# CVE-2026-109468: Microsoft ASP.NET Core resource exhaustion denial of service

Source: https://junglewise.ai/threats/cve-2026-109468-allocation-of-resources-without-limits-or-throttling-in-asp-net  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-15. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-109468 · Severity: high · CVSS 7.5 · Published 2026-10-15

ASP.NET Core, a web application framework used to build cloud and enterprise applications, contains a flaw that allows unauthenticated attackers to exhaust server resources and cause service outages. An attacker on the network can trigger uncontrolled resource allocation, bringing the affected application offline without needing valid credentials or user interaction.

Technologies: [Microsoft Asp.Net Core](https://junglewise.ai/threats/technologies/asp-net-core). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-109468 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-109468 being exploited in the wild.

**How severe is CVE-2026-109468?** High severity, with a CVSS score of 7.5, published 15 October 2026.

**Which products and versions are affected?** Microsoft ASP.NET Core.

**Is there a fix for CVE-2026-109468?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-109468 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-109468?** Check whether you run Microsoft Asp.Net Core. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a resource exhaustion flaw in ASP.NET Core that lacks proper limits or throttling on resource allocation. An unauthenticated attacker can send specially crafted network requests to trigger uncontrolled consumption of server resources (CPU, memory, connections, or similar), resulting in denial of service. The attack requires only network access and no authentication or user interaction.

## Affected products

- Microsoft ASP.NET Core

## Timeline

- 2026-10-15: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109468](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109468)

## Related threats

- [ASP.NET Core Kestrel denial of service in HTTP/3 handling](https://junglewise.ai/threats/cve-2026-70186-microsoft-security-advisory-asp-net-core-denial-of-service)
- [Microsoft ASP.NET Core Kestrel HTTP request smuggling in HTTP/2](https://junglewise.ai/threats/cve-2026-70188-microsoft-security-advisory-asp-net-core-security-feature-bypass)
- [Microsoft ASP.NET Core Localization denial of service](https://junglewise.ai/threats/cve-2026-96236-microsoft-security-advisory-asp-net-core-denial-of-service)
- [Microsoft ASP.NET Core authorization bypass in Blazor AuthorizeRouteView](https://junglewise.ai/threats/cve-2026-70183-microsoft-security-advisory-asp-net-core-security-feature-bypass)
- [ASP.NET Core denial of service in FormPipeReader](https://junglewise.ai/threats/cve-2026-70196-microsoft-security-advisory-asp-net-core-denial-of-service)