CVE-2026-44427 MCP Registry: Open Redirect

The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. From 1.1.0 to 1.7.4, the TrailingSlashMiddleware in internal/api/server.go is vulnerable to an open redirect attack. An attacker can craft a URL with a protocol-relative path e.g., //evil.com/ tha...

CVE-2026-44427

The CVE-2026-44427 entry concerns the MCP Registry’s TrailingSlashMiddleware (internal/api/server.go), affecting versions 1.1.0–1.7.4. The vulnerability is an open redirect caused by processing protocol-relative paths (e.g., //evil.com/) without validating the redirect target after trimming trail...

CVE-2026-44427

The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. From 1.1.0 to 1.7.4, the TrailingSlashMiddleware in internal/api/server.go is vulnerable to an open redirect attack. An attacker can craft a URL with a protocol-relative path e.g., //evil.com/ tha...

Open Redirect

Overview Affected versions of this package are vulnerable to Open Redirect in the TrailingSlashMiddleware function. An attacker can redirect users to arbitrary external domains by crafting a request with a protocol-relative path, leading to potential phishing or malware distribution attacks...

GHSA-V8VW-GW5J-W7M6 MCP Registry has open redirect via protocol-relative path in trailing-slash middleware

Summary The TrailingSlashMiddleware in internal/api/server.go is vulnerable to an open redirect attack. An attacker can craft a URL with a protocol-relative path e.g., //evil.com/ that, after trailing slash removal, results in a Location header of //evil.com — which browsers interpret as an...

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

Summary The TrailingSlashMiddleware in internal/api/server.go is vulnerable to an open redirect attack. An attacker can craft a URL with a protocol-relative path e.g., //evil.com/ that, after trailing slash removal, results in a Location header of //evil.com — which browsers interpret as an...

PT-2026-39261

Name of the Vulnerable Software and Affected Versions MCP Registry versions 1.1.0 through 1.7.4 Description The TrailingSlashMiddleware in internal/api/server.go is susceptible to an open redirect. This occurs because the middleware strips trailing slashes from request paths and issues a 308...