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CVE-2026-61568

@zereight/mcp-gitlab: DNS rebinding reaches local Streamable HTTP MCP transport PUBLISHED

Description (CNA)

`@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Versions prior to 2.1.30 expose the Streamable HTTP MCP endpoint without an effective Host or Origin allowlist. A malicious web page can use DNS rebinding to route browser requests to a victim's local MCP listener while preserving an attacker-controlled `Host` and `Origin`. The server accepts those headers and reaches the MCP initialization path instead of rejecting the request at the HTTP boundary. Version 2.1.30 contains a patch.

Affected (CNA)

Vendor / productVersions
zereight / gitlab-mcpaffected < 2.1.30

CWE

CWE-350

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.