# Steeltoe.Security.Authorization.Certificate (NuGet) vulnerabilities

1 known vulnerability (1 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://www.nuget.org/packages/Steeltoe.Security.Authorization.Certificate

## Advisories (1)

### [CVE-2026-81868](https://cve.now/CVE-2026-81868): Steeltoe: Header-forwarded client cert lacks proof of private-key possession

- Severity: Medium 6.5
- Published: Sep 17, 2026
- Affected: fixed in 4.3.0.

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/packages/nuget/steeltoe.security.authorization.certificate
Site guide for agents: https://cve.now/llms.txt
Uses NVD data; not endorsed by NVD.