CVE-2026-110189
IBM ContextForge MCP Gateway is affected by a denial of service due to an incomplete list of disallowed jq inputs
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.
Fixes and workarounds
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: ibmWorkaround
None. IBM strongly recommends upgrading to the fixed version.
Source: CNA: ibmFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: ibmAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| ContextForge MCP Gateway IBM |
≥ 1.0.8; ≤ 1.0.11 (affected, semver) 1.1.0 (affected, semver) |
CNA: ibm |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 6.5 medium |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | CNA: ibm |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://www.ibm.com/support/pages/node/7296697CNA: ibm · vendor-advisory, patch
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