---
id: "CVE-2026-110189"
page: "https://infrastack.ai/live/CVE-2026-110189"
kind: "vulnerability"
aliases: ["CVE-2026-110189"]
title: "IBM ContextForge MCP Gateway: crafted filter input crashes gateway workers"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: [{"name": "ContextForge MCP Gateway", "fixed": ["1.1.1"], "affected": ">= 1.0.8, <= 1.0.11; 1.1.0", "ecosystem": "vendor"}]
ecosystems: []
tags: ["ai-tooling", "ibm-contextforge", "mcp", "self-hosted"]
not_affected_if: ["auth-required", "default-config"]
published_at: "2026-11-13T22:17:20+00:00"
first_seen_at: "2026-11-13T22:33:33+00:00"
updated_at: "2026-11-13T22:36:16+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-110189", "first_seen_at": "2026-11-13T22:33:33+00:00"}, {"source": "analyst", "url": "https://www.ibm.com/support/pages/node/7296697", "first_seen_at": "2026-11-13T22:36:16+00:00", "cites": ["https://www.ibm.com/support/pages/node/7296697"]}]
exploit_sources: []
---

# IBM ContextForge MCP Gateway: crafted filter input crashes gateway workers

Link for people: https://infrastack.ai/live/CVE-2026-110189 (this .md is for agents)

IBM ContextForge MCP Gateway versions 1.0.8 through 1.0.11 and 1.1.0 have an incomplete denylist in their jq filter guard, so a crafted jsonpath_filter value containing halt, halt_error, or unbounded-loop built-ins gets past the check. An attacker with valid credentials can use this to kill gateway worker processes or exhaust resources.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:ContextForge MCP Gateway affected >= 1.0.8, <= 1.0.11; 1.1.0 fixed 1.1.1

## How to check

Check the installed ContextForge MCP Gateway version (pip/container image tag). Exposed if it is v1.0.8 to v1.0.11 or v1.1.0 and authenticated users can set a tool jsonpath_filter. v1.0.7 and earlier are not listed in this bulletin (they have a separate jq issue, CVE-2026-18486).

## Fix

Upgrade IBM ContextForge MCP Gateway to v1.1.1. IBM lists no workarounds.

## Timeline

- 2026-11-13T22:33:33+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-110189
- 2026-11-13T22:36:16+00:00 analyst https://www.ibm.com/support/pages/node/7296697 — Read IBM bulletin 7296697: affected v1.0.8-1.0.11 and v1.1.0, fixed v1.1.1, IBM lists no workarounds. No exploitation or PoC seen; did not search social.

## Documents

- [advisory] IBM Security Bulletin: ContextForge MCP Gateway DoS via incomplete jq denylist (CVE-2026-110189) https://www.ibm.com/support/pages/node/7296697

## From the sources

IBM ContextForge MCP Gateway 1.0.8 through 1.0.11, and v1.1.0  is vulnerable to denial of service due to an incomplete denylist in the jq filter guard module (CWE-184). An authenticated remote attacker can supply a crafted `jsonpath_filter` value containing `halt`, `halt_error`, or unbounded-loop built-ins that bypass the safety check, causing gateway worker process termination or sustained resource exhaustion.

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