CVE-2026-18486

IBM ContextForge MCP Gateway is affected by credential disclosure and privilege escalation via jq filter execution

Published Sep 4, 2026 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Description
IBM ContextForge MCP Gateway <= v1.0.7 MCP Context Forge could allow a remote authenticated attacker to obtain sensitive credentials and escalate privileges due to improper validation of jq filters.

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerability now. Product(s)Version(s) number and/or range Remediation/Fix/InstructionsIBM ContextForge MCP Gateway<=v1.0.7Upgrade to v1.0.8. See [release notes]( https://github.com/IBM/mcp-context-forge/releases/tag/v1.0.8) https://github.com/IBM/mcp-context-forge/releases/tag/v1.0.8%29 . Rotate `JWT_SECRET_KEY`, `AUTH_ENCRYPTION_SECRET`, `DATABASE_URL`, `REDIS_URL`, and `BASIC_AUTH_PASSWORD` on any deployment running prior versions.   Note: From version v1.0.8 on a more complex AUTH_ENCRYPTION_SECRET is required: Action required before upgrading: run the one-shot re-encryption script (mcpgateway/scripts/migrate_enc_secret.py) with the old and new keys while the gateway is stopped. See the full rotation guide at docs/docs/operations/auth-encryption-secret-rotation.md https://github.com/IBM/mcp-context-forge/blob/v1.0.8/docs/docs/operations/auth-encryption-secret-rotation.md for step-by-step instructions, deployment-specific commands, and special cases (Helm/Kubernetes, Python package consumers, rollback).


Vendor Workaround

None. IBM strongly recommends upgrading to the fixed version and rotating server credentials.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Ibm contextforge
CPEs cpe:2.3:a:ibm:contextforge:*:*:*:*:*:python:*:*
Vendors & Products Ibm contextforge
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description IBM ContextForge MCP Gateway <= v1.0.7 MCP Context Forge could allow a remote authenticated attacker to obtain sensitive credentials and escalate privileges due to improper validation of jq filters.
Title IBM ContextForge MCP Gateway is affected by credential disclosure and privilege escalation via jq filter execution
First Time appeared Ibm
Ibm contextforge-mcp-gateway
Weaknesses CWE-200
CPEs cpe:2.3:a:ibm:contextforge-mcp-gateway:*:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm contextforge-mcp-gateway
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
Sep 10, 2026, 3:07 PM
Reserved
Jul 31, 2026, 1:30 PM
Status
Analyzed
Published
Sep 4, 2026, 5:16 PM
Modified
Sep 15, 2026, 3:05 PM