CVE-2026-61560
CVE-2026-61560 · @zereight/mcp-gitlab's unauthenticated arbitrary file read via `upload_markdown` enables PAT exfiltration and full account takeover
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`@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.
CVSS 9.8 · Critique · EPSS 2,9% · Code d’exploitation public · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
gitlab-mcp
- Versions du logiciel
- < 2.1.27: Concernée
Aucun correctif publié
@zereight/mcp-gitlab npm
- Plages de versions concernées
- SEMVER: < 2.1.27
Mettez à jour vers 2.1.27