# CVE-2023-35391: .NET Information Disclosure Vulnerability

Source: https://junglewise.ai/threats/cve-2023-35391-net-information-disclosure-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-08-11  
License: CC BY 4.0 with a link back

CVE-2023-35391 · Severity: low · CVSS 3.1 · Published 2023-08-11

.NET Information Disclosure Vulnerability

Technologies: [Microsoft.AspNetCore.SignalR.StackExchangeRedis (NuGet)](https://junglewise.ai/threats/technologies/microsoft-aspnetcore-signalr-stackexchangeredis). Vendors: [NuGet](https://junglewise.ai/threats/vendors/nuget).

## Quick answers

**Is CVE-2023-35391 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-35391 being exploited in the wild.

**How severe is CVE-2023-35391?** Low severity, with a CVSS score of 3.1, published 11 August 2023.

**Which products and versions are affected?** Microsoft.AspNetCore.SignalR.Redis (NuGet) ECOSYSTEM:introduced=0,fixed=1.0.40; Microsoft.AspNetCore.SignalR.StackExchangeRedis (NuGet) ECOSYSTEM:introduced=7.0.0,fixed=7.0.10.

**Is there a fix for CVE-2023-35391?** Yes. Microsoft.AspNetCore.SignalR.Redis (NuGet): upgrade to 1.0.40 or later; Microsoft.AspNetCore.SignalR.StackExchangeRedis (NuGet): upgrade to 7.0.10 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-35391?** Check whether you run Microsoft.AspNetCore.SignalR.Redis (NuGet) or Microsoft.AspNetCore.SignalR.StackExchangeRedis (NuGet) at an affected version. 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.

## How to fix

- Microsoft.AspNetCore.SignalR.Redis (NuGet): upgrade to 1.0.40 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.SignalR.Redis --version 1.0.40
  ```

- Microsoft.AspNetCore.SignalR.StackExchangeRedis (NuGet): upgrade to 7.0.10 or later

  ```sh
  dotnet add package Microsoft.AspNetCore.SignalR.StackExchangeRedis --version 7.0.10
  ```


## Affected products

- Microsoft.AspNetCore.SignalR.Redis (NuGet) ECOSYSTEM:introduced=0,fixed=1.0.40
- Microsoft.AspNetCore.SignalR.StackExchangeRedis (NuGet) ECOSYSTEM:introduced=7.0.0,fixed=7.0.10

## Identifiers

- CVE-2023-35391
- GHSA-j8rm-cm55-qqj6

## Related threats

- [Microsoft ASP.NET Core SignalR memory leak denial of service](https://junglewise.ai/threats/duplicate-advisory-microsoft-security-advisory-asp-net-core-denial-of-f6859a00)
- [Microsoft ASP.NET Core memory leak denial of service](https://junglewise.ai/threats/cve-2026-114147-missing-release-of-memory-after-effective-lifetime-in-asp-net)