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.NET
.NET NuGet
Not in CISA KEV
HIGH severity

EnhancedLinq.Async is Vulnerable to Denial of Service via Transitive Dependency Microsoft.Bcl.MemoryGHSA-32wq-ppwg-3w4m

HIGH

GHSA-32wq-ppwg-3w4m is a high-severity (CVSS 7.5) vulnerability in EnhancedLinq.Async. A fix is available for EnhancedLinq.Async — see the affected versions and patch details below.

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Apr 2, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
.NETEnhancedLinq.Async

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.

Description

Impact

Microsoft.Bcl.Memory, a transitive dependency of EnhancedLinq.Async, had a Denial of Service security vulnerability, CVE-2026-26127, thus affecting EnhancedLinq.Async versions that had vulnerable versions of Microsoft.Bcl.Memory as a transitive dependency.

Patches

EnhancedLinq.Async 1.0.0 Beta 3 updates the dependency on System.Linq.AsyncEnumerable to version 10.0.4 or newer which in turn updates the transitive dependency on Microsoft.Bcl.Memory from version 10.0.3 to 10.0.4 or newer, resolving the vulnerability.

Workarounds

No workarounds exist for this vulnerability.

How to fix the issue

To update the EnhancedLinq.Async NuGet package, use one of the following methods:

NuGet Package Manager UI in Visual Studio:

  • Open the project in Visual Studio.
  • Right-click on the project in Solution Explorer and select "Manage NuGet Packages..." or navigate to "Project > Manage NuGet Packages".
  • In the NuGet Package Manager window, select the "Updates" tab. This tab lists packages with available updates from configured package sources.
  • Select the package(s) to update. A specific version can be chosen from the dropdown, or the latest available version can be selected.
  • Click the "Update" button.

Using the NuGet Package Manager Console in Visual Studio:

  • Open the project in Visual Studio.
  • Navigate to "Tools > NuGet Package Manager > Package Manager Console".
  • To update a specific package to its latest version, use the following Update-Package command:
Update-Package -Id EnhancedLinq.Async

Using the .NET CLI (Command Line Interface):

  • Open a terminal or command prompt in the project's directory.
  • To update a specific package to its latest version, use the following add package command:
dotnet package update EnhancedLinq.Async

Once the NuGet package reference has been updated, the application must be recompiled and redeployed.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
.NETNuGetEnhancedLinq.Async≥ 1.0.0-beta.1&&< 1.0.0-beta.31.0.0-beta.3dotnet add package EnhancedLinq.Async --version 1.0.0-beta.3

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for EnhancedLinq.Async, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update EnhancedLinq.Async to 1.0.0-beta.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-32wq-ppwg-3w4m is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

### Impact `Microsoft.Bcl.Memory`, a transitive dependency of `EnhancedLinq.Async`, had a Denial of Service security vulnerability, [CVE-2026-26127](https://github.com/dotnet/announcements/issues/384), thus affecting `EnhancedLinq.Async` versions that had vulnerable versions of `Microsoft.Bcl.Memory` as a transitive dependency. ### Patches `EnhancedLinq.Async` 1.0.0 Beta 3 updates the dependency on `System.Linq.AsyncEnumerable` to version 10.0.4 or newer which in turn updates the transitive dependency on `Microsoft.Bcl.Memory` from version 10.0.3 to 10.0.4 or newer, resolving the vulnerabilit
O3 Security · Impact-Aware SCA

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