{
 "public_id": "AIR-2026-0247",
 "incident_id": "2026-09-zereight-gitlab-mcp-unauth-file-read",
 "date_disclosed": "2026-09-16",
 "date_occurred": null,
 "title": "CVE-2026-61560: unauthenticated arbitrary file read in @zereight/mcp-gitlab SSE mode enables PAT theft and GitLab account takeover",
 "class": "responsible_disclosure",
 "attack_surface": "mcp_server",
 "initial_vector": "unauthenticated_network_request",
 "agent_capability_abused": [
  "file_read_tool",
  "sse_transport"
 ],
 "target_product": "@zereight/mcp-gitlab",
 "target_vendor": "zereight",
 "autonomy_level": "assistant",
 "impact_realized": false,
 "impact_type": [
  "arbitrary_file_read",
  "credential_theft",
  "account_takeover"
 ],
 "blast_radius": "@zereight/mcp-gitlab < 2.1.27 in SSE mode; the default Docker deployment binds 0.0.0.0 and runs as root",
 "cve": [
  "CVE-2026-61560"
 ],
 "taxonomy": {
  "owasp_asi": [
   "ASI03"
  ],
  "mitre_atlas": [],
  "labels": [
   "missing_authentication",
   "path_traversal",
   "credential_theft",
   "sse_transport",
   "mcp_server"
  ]
 },
 "defense_present": null,
 "defense_bypassed": true,
 "fix_shipped": "@zereight/mcp-gitlab 2.1.27",
 "primary_sources": [
  "https://github.com/zereight/gitlab-mcp/security/advisories/GHSA-cv3r-c5h8-f4g5",
  "https://cveawg.mitre.org/api/cve/CVE-2026-61560",
  "https://cvebrief.com/archive/2026/09/16/"
 ],
 "verified_quote": "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.",
 "confidence": "high",
 "notes": "CVSS 9.8. GHSA-cv3r-c5h8-f4g5 published 2026-09-16; CVE published 2026-09-15. Reported by gil-maman-p and hodaya-prz. SSE mode exposes ~100+ tools with no auth; upload_markdown reads arbitrary files via unsanitized file_path. PoC only, no real victim.",
 "risk_category": "security_fraud",
 "risk_secondary": [],
 "risk_subcategory": "Credential & Secret Theft",
 "risk_sub_secondary": [
  "Unauthorized Access & Account Takeover",
  "Over-permissioned execution & lateral movement"
 ],
 "ai_entity": "generative",
 "agency": "ai_as_target",
 "agency_debatable": false,
 "agency_reason": "MCP server file-read flaw; no model decision",
 "vector_family": "conventional_vulnerability",
 "vector_detail": "unauthenticated_network_request",
 "guardrail_kind": [
  "unknown"
 ],
 "guardrail_outcome": "silent",
 "xrefs": {
  "aiid": [],
  "atlas": [],
  "cve": [
   "CVE-2026-61560"
  ],
  "ghsa": []
 },
 "primary_asi": "ASI03",
 "agent_framework": "mcp_server",
 "model_provider": "unknown",
 "model_name": "",
 "detection_mechanism": "unknown",
 "tool_access": "unknown",
 "financial_loss_band": "unknown",
 "eai_category": "credential_theft",
 "eai_domain": "access_control_and_permissions",
 "eai_secondary": [
  "privilege_escalation"
 ],
 "eai_reason": "subcategory: Credential & Secret Theft",
 "asi_curated": [],
 "asi_scope": "in_scope",
 "asi_provenance": "rule",
 "asi_reason": "ASI03 (eai_category=credential_theft)",
 "submitted_by": "EAI Internal"
}