nuget package report

Is Microsoft.OpenAPI safe?

1 known vulnerability, worst severity HIGH.

cvss

7.5

how bad it is if exploited, out of 10

epss

1.2%

chance of exploitation in the next 30 days

xyz score

3.6

CyberXYZ composite, out of 10

fig. 01 — GHSA-v5pm-xwqc-g5wc, the advisory selected below

// advisories

GHSA-v5pm-xwqc-g5wc

HIGHCVE-2026-49451

A small OpenAPI document containing a circular schema reference can cause process termination through stack overflow in Microsoft.OpenApi. The issue affects OpenAPI document parsing through public OpenAPI.NET reader APIs and has been confirmed across both JSON and YAML reader paths.

Affected: >= 3.0.0, <= 3.5.3
Fixed in: 3.5.4
Weakness: CWE-674
Published: 2026-06-30
Source: github

GHSA NVD MITRE 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 01:37 UTC. The most recent advisory here was published 2026-06-30. Updated continuously from NVD, GHSA, OSV and CNA feeds.

Is Microsoft.OpenAPI safe? nuget package security report | CyberXYZ