Is github.com/modelcontextprotocol/registry affected by CVE-2026-44427?

Go github.com/modelcontextprotocol/registry is affected in >=1.1.0 <1.7.5.

Is CVE-2026-44427 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

medium

CVE-2026-44427

Q: Is CVE-2026-44427 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

Go · github.com/modelcontextprotocol/registry

Summary

MCP Registry has open redirect via protocol-relative path in trailing-slash middleware

Severity: medium
EPSS: 0.4% (p32)
Also known as: GHSA-v8vw-gw5j-w7m6
Published: 2026-05-08

References

https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-v8vw-gw5j-w7m6
https://nvd.nist.gov/vuln/detail/CVE-2026-44427
https://github.com/modelcontextprotocol/registry/pull/1227

Related advisories

CVE-2026-45781 — medium · Go/github.com/modelcontextprotocol/registry
CVE-2026-44430 — medium · Go/github.com/modelcontextprotocol/registry
CVE-2026-44429 — medium · Go/github.com/modelcontextprotocol/registry

Is your project exposed to this? Stateward checks every dependency on every pull request and flags it only if your code actually reaches it.

Check my repo

Summarize with AI

ChatGPT Claude Perplexity

Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.