GitLab MCP Server: SSE transport has no authentication and wildcard CORS, exposing all GitLab tools
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
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| yoda-digital | mcp-gitlab-server | affected |
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| Vendor | Product | Versions | ||||||||
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| Yoda-digital | Mcp-gitlab-server |
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| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-8jr5-6gvj-rfpf | @yoda.digital/gitlab-mcp-server's SSE transport has no authentication and wildcard CORS, exposing all 86 GitLab tools |
No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.445% probability within 30 days)
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| Metrics |
ssvc
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| First Time appeared |
Yoda-digital
Yoda-digital mcp-gitlab-server |
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| Vendors & Products |
Yoda-digital
Yoda-digital mcp-gitlab-server |
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| Description | GitLab MCP Server lets an AI agent talk directly to GitLab. Prior to 0.6.0, the HTTP transport in src/transport.ts ships with no authentication layer at all and a wildcard Access-Control-Allow-Origin: * on every response. The structural defect is that the SSE server stands up a stateful, mutation-capable RPC endpoint that is backed by the operator's GITLAB_PERSONAL_ACCESS_TOKEN without any inbound credential check, then advertises itself to every cross-origin browser context via the wildcard CORS header. The httpServer.listen(port) call at line 97 also passes no host argument, so the bind defaults to 0.0.0.0 and exposes the auth-less surface on every interface. This vulnerability is fixed in 0.6.0. | |
| Title | GitLab MCP Server: SSE transport has no authentication and wildcard CORS, exposing all GitLab tools | |
| Weaknesses | CWE-306 CWE-942 |
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| References |
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| Metrics |
cvssV4_0
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