Disclosed vulnerability
CVE-2026-61560: unauthenticated arbitrary file read in @zereight/mcp-gitlab SSE mode enables PAT theft and GitLab account takeover
AIR-2026-0247 AIR record · 2026-09-zereight-gitlab-mcp-unauth-file-read
From the supporting source
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.github.com
The record
Disclosed
2026-09-16
Vendor
zereight
Product
@zereight/mcp-gitlab
Risk domain
Access control and permissions › Credential theft
Also touches
Privilege escalation
System type
Generative model
Who acted
AI was the target — MCP server file-read flaw; no model decision
Attack surface
MCP server
Autonomy level
Assistant
Initial vector
Unauthenticated network request
Impact type
Arbitrary file read, Credential theft, Account takeover
Confidence
High
Submitted by
EAI Internal
Crosswalk
- OWASP Agentic Top 10 (2026)
- ASI03 – Identity and Privilege Abuse
- MITRE ATLAS
- AML.T0012 – Valid Accounts
- NIST AI RMF
- MEASURE 2.7
- EU AI Act
- Article 13
- ISO/IEC
- TR 24028; 42001; 23894
- AIUC-1
- B. Security
- Scope
- tool failure
- Mitigation
- Use secure credential storage; Implement short-lived tokens.
- Taxonomy
- Enkrypt AI agent risk taxonomy · Black-Box Red Teaming of Agentic AI: A Taxonomy-Driven Framework for Automated Risk Discovery
Blast radius
@zereight/mcp-gitlab < 2.1.27 in SSE mode; the default Docker deployment binds 0.0.0.0 and runs as root
Capability abused
Defense & remediation
Guardrail kinds
Unknown
Guardrail outcome
Silent
Fix shipped
@zereight/mcp-gitlab 2.1.27
Taxonomy & references
Curator 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.
Supporting sources
Cite as
Enkrypt AI. "CVE-2026-61560: unauthenticated arbitrary file read in @zereight/mcp-gitlab SSE mode enables PAT theft and GitLab account takeover". AIR, AIR-2026-0247. https://agentincident.vercel.app/i/AIR-2026-0247/ (accessed 2026-10-19).