# System.Text.Json (NuGet) vulnerabilities

Source: https://junglewise.ai/threats/technologies/system-text-json  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 01:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/system-text-json.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in System.Text.Json (NuGet): 1 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-2026-120796, was published on 10 November 2026. Nothing was published in the last eight weeks.

## Counts

- Last 7 days: 1
- Last 30 days: 1
- Last 90 days: 1
- All time: 3 (0 critical, 0 exploited in the wild)

## About System.Text.Json (NuGet)

.NET library for parsing, creating, and manipulating JSON documents.

## Latest System.Text.Json (NuGet) vulnerabilities

- [CVE-2026-120796: Microsoft .NET algorithmic complexity denial of service](https://junglewise.ai/threats/cve-2026-120796-inefficient-algorithmic-complexity-in-net-allows-an-unauthorized) (medium, CVSS 5.3, published 10 Nov 2026)
- [CVE-2024-43485: Microsoft Security Advisory | .NET Denial of Service Vulnerability](https://junglewise.ai/threats/cve-2024-43485-microsoft-security-advisory-net-denial-of-service-vulnerability) (low, CVSS 3.1, published 8 Oct 2024)
- [CVE-2024-30105: Microsoft Security Advisory | .NET Denial of Service Vulnerability](https://junglewise.ai/threats/cve-2024-30105-microsoft-security-advisory-net-denial-of-service-vulnerability) (low, CVSS 3.1, published 9 Jul 2024)

## Most severe System.Text.Json (NuGet) vulnerabilities

- [CVE-2026-120796: Microsoft .NET algorithmic complexity denial of service](https://junglewise.ai/threats/cve-2026-120796-inefficient-algorithmic-complexity-in-net-allows-an-unauthorized) (medium, CVSS 5.3, published 10 Nov 2026)
- [CVE-2024-43485: Microsoft Security Advisory | .NET Denial of Service Vulnerability](https://junglewise.ai/threats/cve-2024-43485-microsoft-security-advisory-net-denial-of-service-vulnerability) (low, CVSS 3.1, published 8 Oct 2024)
- [CVE-2024-30105: Microsoft Security Advisory | .NET Denial of Service Vulnerability](https://junglewise.ai/threats/cve-2024-30105-microsoft-security-advisory-net-denial-of-service-vulnerability) (low, CVSS 3.1, published 9 Jul 2024)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| 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 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 1 | 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, "System.Text.Json (NuGet) vulnerabilities", https://junglewise.ai/threats/technologies/system-text-json, 13 November 2026.