# Microsoft.AspNetCore.Authentication.Negotiate (NuGet) vulnerabilities Source: https://junglewise.ai/threats/technologies/microsoft-aspnetcore-authentication-negotiate Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/microsoft-aspnetcore-authentication-negotiate.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 3 vulnerabilities in Microsoft.AspNetCore.Authentication.Negotiate (NuGet): 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-70179, was published on 13 October 2026. 1 vulnerability in the last four weeks, up from none in the four before. ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 1 - All time: 3 (0 critical, 0 exploited in the wild) ## About Microsoft.AspNetCore.Authentication.Negotiate (NuGet) A NuGet package that provides Windows Authentication support for ASP.NET Core applications using Negotiate, Kerberos, or NTLM. ## Latest Microsoft.AspNetCore.Authentication.Negotiate (NuGet) vulnerabilities - [CVE-2026-70179: Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.](https://junglewise.ai/threats/cve-2026-70179-microsoft-security-advisory-asp-net-core-elevation-of-privilege) (high, CVSS 7.5, published 13 Oct 2026) - [CVE-2026-47303: Microsoft ASP.NET Core authentication bypass and privilege escalation](https://junglewise.ai/threats/cve-2026-47303-microsoft-asp-net-core-authentication-bypass-and-privilege) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-47300: Microsoft ASP.NET Core privilege escalation in authentication algorithm](https://junglewise.ai/threats/cve-2026-47300-microsoft-asp-net-core-privilege-escalation-in-authentication) (high, CVSS 8.8, published 14 Jul 2026) ## Most severe Microsoft.AspNetCore.Authentication.Negotiate (NuGet) vulnerabilities - [CVE-2026-47303: Microsoft ASP.NET Core authentication bypass and privilege escalation](https://junglewise.ai/threats/cve-2026-47303-microsoft-asp-net-core-authentication-bypass-and-privilege) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-47300: Microsoft ASP.NET Core privilege escalation in authentication algorithm](https://junglewise.ai/threats/cve-2026-47300-microsoft-asp-net-core-privilege-escalation-in-authentication) (high, CVSS 8.8, published 14 Jul 2026) - [CVE-2026-70179: Authentication bypass by spoofing in ASP.NET Core allows an authorized attacker to elevate privileges over a network.](https://junglewise.ai/threats/cve-2026-70179-microsoft-security-advisory-asp-net-core-elevation-of-privilege) (high, CVSS 7.5, published 13 Oct 2026) ## Vulnerabilities per week 1 vulnerability in the last four weeks, up from none in the four before. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 1 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other NuGet technologies - [Microsoft.ChakraCore (NuGet)](https://junglewise.ai/threats/technologies/microsoft-chakracore): 247 vulnerabilities - [Magick.NET-Q16-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-anycpu): 167 vulnerabilities - [Magick.NET-Q16-HDRI-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-anycpu): 162 vulnerabilities - [Magick.NET-Q8-AnyCPU (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-anycpu): 162 vulnerabilities - [Magick.NET-Q16-HDRI-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-x86): 160 vulnerabilities - [Magick.NET-Q8-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q8-x86): 160 vulnerabilities - [Magick.NET-Q16-x86 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-x86): 159 vulnerabilities - [Magick.NET-Q16-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-arm64): 157 vulnerabilities - [Magick.NET-Q16-HDRI-OpenMP-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-openmp-arm64): 157 vulnerabilities - [Magick.NET-Q16-HDRI-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-hdri-x64): 157 vulnerabilities - [Magick.NET-Q16-OpenMP-arm64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-openmp-arm64): 157 vulnerabilities - [Magick.NET-Q16-OpenMP-x64 (NuGet)](https://junglewise.ai/threats/technologies/magick-net-q16-openmp-x64): 157 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Microsoft.AspNetCore.Authentication.Negotiate (NuGet) vulnerabilities", https://junglewise.ai/threats/technologies/microsoft-aspnetcore-authentication-negotiate, 13 November 2026.