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Microsoft.AspNetCore.SignalR.Protocols.MessagePack: vulnerability history, versions and safety

Microsoft.AspNetCore.SignalR.Protocols.MessagePack is a package in the NuGet ecosystem. Vulert records 2 vulnerabilities for it across 20 releases, from May 2022 to Oct 2026. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.

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2 vulnerabilities recorded H1 M1
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0 with no fix published

Every vulnerability has a patched version to move to.

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1 in the last 12 months

Most recent disclosure 13 Oct 2026.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all Microsoft.AspNetCore.SignalR.Protocols.MessagePack vulnerabilities

Vulert verdict on Microsoft.AspNetCore.SignalR.Protocols.MessagePack 10.0.13 i

Updated on 23 Oct 2026

Good news: 10.0.13, the version you would install today, has no known vulnerabilities. Older releases do — the table below lists all 2.

Package health score 86/100
  • Security Minor issues
  • Maintenance Sustainable
  • Popularity Key ecosystem project
  • Community Moderate

What to do: Stay on 10.0.13 or newer. This can change: a vulnerability disclosed tomorrow can affect 10.0.13 too — Vulert watches the package and alerts you if that happens. Monitor it with Vulert →

  • Current release 10.0.13 — unaffected i
  • Vulnerabilities on record 2 over 4 years · 1 in the last year i
  • Latest disclosure 13 Oct 2026 i
  • Highest CVSS 7.5 i
  • With no published fix 0 i
  • Stars 38,474 i
  • OpenSSF scorecard 5/10 i
  • Last release this month i
  • Licence MIT i

Version list, release dates, licence and dependants published by NuGet, refreshed 23 Oct 2026. Licence information is not legal advice.

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01 Versions

Which versions are affected

Every version Vulert tracks for Microsoft.AspNetCore.SignalR.Protocols.MessagePack, newest first, with the vulnerabilities recorded against each one. A version showing none has no vulnerability in the Vulert database — open it for the full picture on that release.

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Version Released Vulert vulnerabilities Licence Fix published Details
9.0.21 13 Oct 2026 none MIT — Details →
8.0.32 13 Oct 2026 none MIT — Details →
10.0.13 13 Oct 2026 none MIT — Details →
11.0.0-rc.2.26504.105 13 Oct 2026 none MIT — Details →
9.0.20 08 Sep 2026 none MIT — Details →
10.0.12 08 Sep 2026 M1 MIT Yes Details →
8.0.31 08 Sep 2026 none MIT — Details →
11.0.0-rc.1.26425.128 08 Sep 2026 none MIT — Details →
9.0.19 11 Aug 2026 none MIT — Details →
10.0.11 11 Aug 2026 M1 MIT Yes Details →
8.0.30 11 Aug 2026 none MIT — Details →
11.0.0-preview.7.26381.103 11 Aug 2026 none MIT — Details →
9.0.18 14 Jul 2026 none MIT — Details →
10.0.10 14 Jul 2026 M1 MIT Yes Details →
8.0.29 14 Jul 2026 none MIT — Details →
11.0.0-preview.6.26359.118 14 Jul 2026 none MIT — Details →
1.2.11 09 Jun 2026 none non-standard — Details →
9.0.17 09 Jun 2026 none MIT — Details →
10.0.9 09 Jun 2026 M1 MIT Yes Details →
8.0.28 09 Jun 2026 none MIT — Details →
11.0.0-preview.5.26302.115 09 Jun 2026 none MIT — Details →
1.2.10 12 May 2026 none non-standard — Details →
9.0.16 12 May 2026 none MIT — Details →
10.0.8 12 May 2026 M1 MIT Yes Details →
8.0.27 12 May 2026 none MIT — Details →
11.0.0-preview.4.26230.115 12 May 2026 none MIT — Details →
10.0.7 21 Apr 2026 M1 MIT Yes Details →
9.0.15 14 Apr 2026 none MIT — Details →
8.0.26 14 Apr 2026 none MIT — Details →
10.0.6 14 Apr 2026 M1 MIT Yes Details →
11.0.0-preview.3.26207.106 14 Apr 2026 none MIT — Details →
10.0.5 12 Mar 2026 M1 MIT Yes Details →
11.0.0-preview.2.26159.112 10 Mar 2026 none MIT — Details →
9.0.14 10 Mar 2026 none MIT — Details →
8.0.25 10 Mar 2026 none MIT — Details →
10.0.4 10 Mar 2026 M1 MIT Yes Details →
11.0.0-preview.1.26104.118 10 Feb 2026 none MIT — Details →
9.0.13 10 Feb 2026 none MIT — Details →
10.0.3 10 Feb 2026 M1 MIT Yes Details →
8.0.24 10 Feb 2026 none MIT — Details →
9.0.12 13 Jan 2026 none MIT — Details →
10.0.2 13 Jan 2026 M1 MIT Yes Details →
8.0.23 13 Jan 2026 none MIT — Details →
1.2.9 07 Jan 2026 none non-standard — Details →
1.2.8 07 Jan 2026 none non-standard — Details →
10.0.1 09 Dec 2025 M1 MIT Yes Details →
10.0.0 11 Nov 2025 M1 MIT Yes Details →
9.0.11 11 Nov 2025 none MIT — Details →
8.0.22 11 Nov 2025 none MIT — Details →
9.0.10 14 Oct 2025 none MIT — Details →
8.0.21 14 Oct 2025 none MIT — Details →
10.0.0-rc.2.25502.107 14 Oct 2025 none MIT — Details →
9.0.9 09 Sep 2025 none MIT — Details →
8.0.20 09 Sep 2025 none MIT — Details →
10.0.0-rc.1.25451.107 09 Sep 2025 none MIT — Details →
10.0.0-preview.7.25380.108 12 Aug 2025 M1 MIT Yes Details →
9.0.8 05 Aug 2025 none MIT — Details →
8.0.19 04 Aug 2025 none MIT — Details →
10.0.0-preview.6.25358.103 15 Jul 2025 M1 MIT Yes Details →
9.0.7 08 Jul 2025 none MIT — Details →
8.0.18 08 Jul 2025 none MIT — Details →
9.0.6 10 Jun 2025 none MIT — Details →
8.0.17 10 Jun 2025 none MIT — Details →
10.0.0-preview.5.25277.114 06 Jun 2025 M1 MIT Yes Details →
9.0.5 13 May 2025 none MIT — Details →
8.0.16 13 May 2025 none MIT — Details →
10.0.0-preview.4.25258.110 12 May 2025 M1 MIT Yes Details →
10.0.0-preview.3.25172.1 10 Apr 2025 M1 MIT Yes Details →
9.0.4 08 Apr 2025 none MIT — Details →
8.0.15 08 Apr 2025 none MIT — Details →
10.0.0-preview.2.25164.1 18 Mar 2025 M1 MIT Yes Details →
9.0.3 11 Mar 2025 none MIT — Details →
8.0.14 11 Mar 2025 none MIT — Details →
10.0.0-preview.1.25120.3 25 Feb 2025 M1 MIT Yes Details →
9.0.2 11 Feb 2025 none MIT — Details →
8.0.13 11 Feb 2025 none MIT — Details →
1.2.0 14 Jan 2025 none non-standard — Details →
9.0.1 14 Jan 2025 none MIT — Details →
8.0.12 14 Jan 2025 none MIT — Details →
9.0.0 12 Nov 2024 none MIT — Details →
6.0.36 12 Nov 2024 none MIT — Details →
8.0.11 12 Nov 2024 none MIT — Details →
9.0.0-rc.2.24474.3 08 Oct 2024 none MIT — Details →
8.0.10 08 Oct 2024 none MIT — Details →
6.0.35 08 Oct 2024 none MIT — Details →
9.0.0-rc.1.24452.1 10 Sep 2024 none MIT — Details →
9.0.0-preview.7.24406.2 13 Aug 2024 none MIT — Details →
8.0.8 13 Aug 2024 none MIT — Details →
6.0.33 13 Aug 2024 none MIT — Details →
9.0.0-preview.6.24328.4 09 Jul 2024 none MIT — Details →
8.0.7 09 Jul 2024 none MIT — Details →
6.0.32 09 Jul 2024 none MIT — Details →
9.0.0-preview.5.24306.11 11 Jun 2024 none MIT — Details →
8.0.6 28 May 2024 none MIT — Details →
7.0.20 28 May 2024 none MIT — Details →
6.0.31 28 May 2024 none MIT — Details →
9.0.0-preview.4.24267.6 21 May 2024 none MIT — Details →
7.0.19 14 May 2024 none MIT — Details →
8.0.5 14 May 2024 none MIT — Details →
6.0.30 14 May 2024 none MIT — Details →
9.0.0-preview.3.24172.13 11 Apr 2024 none — — Details →
8.0.4 09 Apr 2024 none — — Details →
7.0.18 09 Apr 2024 none — — Details →
6.0.29 09 Apr 2024 none — — Details →
8.0.3 12 Mar 2024 none — — Details →
6.0.28 12 Mar 2024 none — — Details →
7.0.17 12 Mar 2024 none — — Details →
9.0.0-preview.2.24128.4 12 Mar 2024 none — — Details →
9.0.0-preview.1.24081.5 13 Feb 2024 none — — Details →
8.0.2 13 Feb 2024 none — — Details →
6.0.27 13 Feb 2024 none — — Details →
7.0.16 13 Feb 2024 none — — Details →
7.0.15 09 Jan 2024 none — — Details →
8.0.1 09 Jan 2024 none — — Details →
6.0.26 09 Jan 2024 none — — Details →
6.0.25 14 Nov 2023 none — — Details →
8.0.0 14 Nov 2023 none — — Details →
7.0.14 14 Nov 2023 none — — Details →
6.0.24 24 Oct 2023 none — — Details →
7.0.13 24 Oct 2023 none — — Details →

The newest 120 of 271 versions Vulert tracks. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2022 1
  • 2026 1

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 1 of the 2 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for Microsoft.AspNetCore.SignalR.Protocols.MessagePack

The 2 most severe of 2 vulnerabilities recorded for this package

Search all 2 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
CVE-2019-0982: Denial of service in ASP.NET Core 7.5 high 1.1.5 24 May 2022
Denial of Service Vulnerability in Microsoft.AspNetCore.SignalR.Protocols.MessagePack 5.3 medium 10.0.13 13 Oct 2026

Vulnerability wrong, a fix missing, or a package we should cover? Report it and we will fix the record. Report Vulnerability Provide Feedback

Updated: 23/Oct/2026 · Vulnerabilities in our DB: 524315

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Questions

About Microsoft.AspNetCore.SignalR.Protocols.MessagePack

Is Microsoft.AspNetCore.SignalR.Protocols.MessagePack safe to use?

Vulert records 2 vulnerabilities for Microsoft.AspNetCore.SignalR.Protocols.MessagePack in NuGet: 0 critical, 1 high, 1 medium and 0 low. Every one of them has a published fix, so the practical answer is to run a supported release and keep it patched.

What is Microsoft.AspNetCore.SignalR.Protocols.MessagePack's Vulert package health score?

Vulert scores Microsoft.AspNetCore.SignalR.Protocols.MessagePack 86/100, which reads as healthy. The score weighs the vulnerability record (40), maintenance and release cadence (25), adoption from dependents and stars (20) and community signals such as the OpenSSF scorecard and forks (15).

Is the latest version of Microsoft.AspNetCore.SignalR.Protocols.MessagePack affected?

No. 10.0.13, the version you would install today, has no vulnerabilities on record against it. Earlier releases do — the version table above lists each release with what affects it.

Which version of Microsoft.AspNetCore.SignalR.Protocols.MessagePack should I use?

10.0.13 is the version Vulert recommends for the affected releases. The version table above lists every release with the vulnerabilities recorded against it, so you can confirm the range you actually run.

How many vulnerabilities does Microsoft.AspNetCore.SignalR.Protocols.MessagePack have?

2 vulnerabilities are recorded for Microsoft.AspNetCore.SignalR.Protocols.MessagePack in the NuGet ecosystem: 0 critical, 1 high, 1 medium and 0 low. The ledger on this page lists the same counts next to the date of the most recent disclosure.

How often are new Microsoft.AspNetCore.SignalR.Protocols.MessagePack vulnerabilities disclosed?

1 vulnerability was recorded for Microsoft.AspNetCore.SignalR.Protocols.MessagePack in the last 12 months, and the oldest entry in this database dates to 24 May 2022. Recency matters more than a lifetime total: it shows how actively new issues are being disclosed for the package you are considering.

Which versions of Microsoft.AspNetCore.SignalR.Protocols.MessagePack are affected?

Each vulnerability on this page lists the affected version range and the fixed version to move to. Open the vulnerability for the version you actually run — fixes are specific to a release line, not to the package as a whole.

How do I monitor Microsoft.AspNetCore.SignalR.Protocols.MessagePack for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the Microsoft.AspNetCore.SignalR.Protocols.MessagePack version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.