@zereight/mcp-gitlab's unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| zereight | gitlab-mcp | affected |
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| Zereight | Gitlab-mcp |
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| Source | ID | Title |
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Github GHSA |
GHSA-cv3r-c5h8-f4g5 | @zereight/mcp-gitlab: Unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: 2.9% (2.901% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Zereight
Zereight gitlab-mcp |
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| Vendors & Products |
Zereight
Zereight gitlab-mcp |
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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| Description | `@zereight/mcp-gitlab` is a Model Context Protocol server for GitLab. Prior to version 2.1.27, the SSE transport mode (`SSE=true`) exposes all MCP tools without any authentication. The `upload_markdown` tool reads arbitrary files from the server's local filesystem via an unsanitized `file_path` parameter and uploads them to a GitLab project. Combined, any unauthenticated network-reachable attacker can read `/proc/self/environ` to steal the server's `GITLAB_PERSONAL_ACCESS_TOKEN` and achieve full GitLab account takeover. This is the default configuration for Docker deployments. Version 2.1.27 contains a patch. | |
| Title | @zereight/mcp-gitlab's unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV3_1
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