# CVE-2026-110189: IBM ContextForge MCP Gateway is affected by a denial of service due to an incomplete list of disallowed jq inputs

Status: published. Published: 2026-11-13. Updated: 2026-11-13.

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.

## Remediation

- fix: IBM strongly recommends addressing the vulnerability now.

Product(s)Version(s) number and/or range Remediation/Fix/InstructionsIBM ContextForge MCP Gatewayv1.1.1Install or upgrade to v1.1.1 [ v1.1.1 Release notes https://github.com/IBM/mcp-context-forge/releases/tag/v1.1.1 ] (source: CNA: ibm)
- workaround: None. IBM strongly recommends upgrading to the fixed version. (source: CNA: ibm)
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: ibm) — https://www.ibm.com/support/pages/node/7296697

## Affected products and versions

- IBM / ContextForge MCP Gateway: ≥ 1.0.8; ≤ 1.0.11 (affected, semver); 1.1.0 (affected, semver). Source: CNA: ibm

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H; source: CNA: ibm

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H; source: NVD: psirt@us.ibm.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-184

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.ibm.com/support/pages/node/7296697 (CNA: ibm; vendor-advisory, patch)

- https://www.ibm.com/support/pages/node/7296697 (psirt@us.ibm.com)

## Provenance

- CNA: ibm: https://www.cve.org/CVERecord?id=CVE-2026-110189; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-110189; retrieved 2026-11-14; source updated 2026-11-13

Revision: 5cb09f094600e9f685d12b18be818ae0c76499e7ec1f74b5dae1af59493e874a

Canonical: https://y2.dev/cve/CVE-2026-110189

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