CVE-2026-45591

Aliases:GHSA-f8h2-vmm9-qhj6BIT-aspnet-core-2026-45591BIT-dotnet-2026-45591BIT-dotnet-sdk-2026-45591
Advisory lineage Upstream: 0 Downstream: 19
Awaiting Analysis
Published: 09 Jun 2026, 17:05
Last modified:15 Jul 2026, 20:09

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
2.43% LOW
2% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

09 Jun 2026, 17:05
Published
Vulnerability first disclosed
15 Jul 2026, 20:09
Last Modified
Vulnerability information updated

Description

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

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 2.43%• Percentile: 82%

Techniques & Countermeasures

  • CWE-400•Uncontrolled Resource Consumption

    The product does not properly control the allocation and maintenance of a limited resource.

  • CWE-770•Allocation of Resources Without Limits or Throttling

    The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected Systems

  • microsoft•asp.net core 10.0

    ≥ 10.0, < 10.0.9

  • microsoft•asp.net core 8.0

    ≥ 8.0, < 8.0.28

  • microsoft•asp.net core 9.0

    ≥ 9.0, < 9.0.17

  • microsoft•microsoft visual studio 2026 version 18.6

    ≥ 18.6.0, < 18.6.3

  • microsoft•.net 10.0

    ≥ 10.0.0, < 10.0.9

  • microsoft•.net 8.0

    ≥ 8.0.0, < 8.0.28

  • microsoft•.net 9.0

    ≥ 9.0.0, < 9.0.17

  • NuGet•Microsoft.AspNetCore.App.Runtime.linux-x64

    ≥ 8.0.0, < 8.0.28 | ≥ 9.0.0, < 9.0.17 | ≥ 10.0.0, < 10.0.9

  • NuGet•Microsoft.AspNetCore.App.Runtime.osx-arm64

    ≥ 8.0.0, < 8.0.28 | ≥ 9.0.0, < 9.0.17 | ≥ 10.0.0, < 10.0.9

  • NuGet•Microsoft.AspNetCore.App.Runtime.win-x64

    ≥ 8.0.0, < 8.0.28 | ≥ 9.0.0, < 9.0.17 | ≥ 10.0.0, < 10.0.9

  • NuGet•Microsoft.AspNetCore.SignalR.Protocols.MessagePack

    ≥ 8.0.0, < 8.0.28 | ≥ 9.0.0, < 9.0.17 | ≥ 10.0.0, < 10.0.9

References (26)