CVE-2026-44427
medium
CVSS v3
—
CVSS v4 NEW
—
VIR risk
5.5
Description
MCP Registry has open redirect via protocol-relative path in trailing-slash middleware
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/modelcontextprotocol/registry | >=1.1.0,<1.7.5 | 1.7.5 |
| GO | github.com/modelcontextprotocol/registry | >= 1.1.0, < 1.7.5 | 1.7.5 |
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
- https://github.com/modelcontextprotocol/registry/commit/1201cbd82b2cf6d4b56edfc05c763059a12f9fdb
- https://github.com/modelcontextprotocol/registry
- https://github.com/modelcontextprotocol/registry/releases/tag/v1.7.5
- https://github.com/advisories/GHSA-v8vw-gw5j-w7m6
CWEs
CWE-601
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.