Path Traversal in IBM Contextforge Mcp Gateway
CVE-2026-77825
IBM ContextForge MCP Gateway 1.0.0 through 1.0.8 was vulnerable to path traversal in its Admin API log-download endpoint (`GET /v1/admin/logs/file`). The path confinement check uses `str.startswith()` rather than proper boundary validation, allowing an authenticated admin to read `.log`, `.jsonl`, and `.json` files outside the configured `LOG_FOLDER` by supplying a filename that resolves into a sibling directory whose absolute path shares the log directory's string prefix.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- www.ibm.com/support/pages/node/7289314 (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-77825?
- CVE-2026-77825 is a medium-severity vulnerability in IBM Contextforge Mcp Gateway, classified under Path Traversal. CVSS score: 4.9/10. Published 2026-09-24.
- How severe is CVE-2026-77825?
- Medium severity. CVSS v3 base score is 4.9 out of 10.