nuget package report

Is System.Text.RegularExpressions safe?

1 known vulnerability, worst severity HIGH.

cvss

7.5

how bad it is if exploited, out of 10

epss

5.7%

chance of exploitation in the next 30 days

xyz score

3.9

CyberXYZ composite, out of 10

fig. 01 — GHSA-cmhx-cq75-c4mj, the advisory selected below

// advisories

GHSA-cmhx-cq75-c4mj

HIGHCVE-2019-0820

A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings, aka '.NET Framework and .NET Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0980, CVE-2019-0981.

Affected: >= 4.3.0, < 4.3.1
Fixed in: 4.3.1
Weakness: CWE-400
Published: 2021-08-04
Source: github

GHSA NVD MITRE reference reference

// dependencies

0 direct

// ai model usage

Tracked for PyPI packages. HuggingFace models declare Python dependencies, so nuget packages are not covered.

Checked 2026-09-22 at 01:29 UTC. The most recent advisory here was published 2021-08-04. Updated continuously from NVD, GHSA, OSV and CNA feeds.

Is System.Text.RegularExpressions safe? nuget package security report | CyberXYZ