CVE-2026-61560
Critical · CVSS 9.8- CVSS
- 9.8
- nvd
- EPSS
- 2.90%
- 86th pct
- KEV
- No
- Class
- oss containerizable
- CWE-22
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.
Affected packages
| npm | @zereight/mcp-gitlab | 0 → 2.1.27 |
References
Status: profiled · ingested 2026-09-16T18:00:27.000Z