CVE-2026-77825: IBM Contextforge

Medium severity, CVSS 4.9. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• IBM Contextforge: from 1.0.0, before 1.0.9 (fixed in 1.0.9)

Published 2026-09-24. Last modified 2026-09-29.