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

Quick assessment

Affected
IBM ContextForge MCP Gateway
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IBM ContextForge MCP Gateway 1.0.8 至 1.0.11 版本以及 v1.1.0 版本存在拒绝服务漏洞，原因是 jq 过滤器防护模块中的拒绝列表（denylist）不完整（CWE-184）。经过身份验证的远程攻击者可以提供一个精心构造的 值，其中包含 、 或无限循环内置函数，从而绕过安全检查，导致网关工作进程终止或持续的资源耗尽。

CVSS 6.5 · Medium EPSS 0.48% · P42

Affected Version Matrix 2

VendorProduct Version RangeStatus
IBM ContextForge MCP Gateway 1.0.8≤ 1.0.11 affected
1.1.0 affected
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I. Basic Information for CVE-2026-110189

Vulnerability Information
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Vulnerability Title
IBM ContextForge MCP Gateway is affected by a denial of service due to an incomplete list of disallowed jq inputs
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不完整的黑名单
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM ContextForge MCP Gateway 1.0.8 ~ 1.0.11 cpe:2.3:a:ibm:contextforge_mcp_gateway:1.0.8:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-110189

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III. Intelligence Information for CVE-2026-110189

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Other References for CVE-2026-110189 (1)

Same Patch Batch · IBM · 2026-11-13 · 21 CVEs total

CVE-2026-91869 8.1 HIGH IBM Security QRadar EDR Improper Restriction of Excessive Authentication Attempts
CVE-2026-115788 8.1 HIGH IBM App Connect Operator and IBM App Connect Enterprise Certified Containers Operands Log
CVE-2026-110279 8.1 HIGH IBM ContextForge MCP Gateway is affected by an improper authentication vulnerability
CVE-2026-109158 7.5 HIGH IBM App Connect Operator and IBM App Connect Enterprise Certified Containers Operands Inse
CVE-2026-123628 7.5 HIGH IBM webMethods Integration Server is vulnerable to sensitive information disclousure via a
CVE-2026-110278 7.4 HIGH IBM ContextForge MCP Gateway is affected by an information exposure vulnerability
CVE-2026-91868 6.5 MEDIUM IBM Security QRadar EDR Improper Access Control
CVE-2026-94407 6.5 MEDIUM IBM ContextForge MCP Gateway is affected by a regular expression denial of service
CVE-2026-82102 6.4 MEDIUM DataStage on Cloud Pak for Data has vulnerabilities due to open source software
CVE-2026-9870 6.1 MEDIUM IBM Cyber Fraud includes components with multiple known vulnerabilities
CVE-2026-114468 6.0 MEDIUM IBM App Connect Operator and IBM App Connect Enterprise Certified Containers Operands Hard
CVE-2026-110194 5.4 MEDIUM IBM ContextForge MCP Gateway is affected by a server-side request forgery vulnerability
CVE-2026-110195 5.4 MEDIUM IBM ContextForge MCP Gateway is affected by an authorization bypass vulnerability
CVE-2026-9821 5.3 MEDIUM IBM Cyber Fraud includes components with multiple known vulnerabilities
CVE-2026-115501 5.3 MEDIUM IBM i is Affected By A Buffer Overflow Vulnerability in QFileSvr.400 File System []
CVE-2026-110199 4.8 MEDIUM IBM ContextForge MCP Gateway is affected by a DOM-based cross-site scripting
CVE-2026-110178 4.1 MEDIUM IBM ContextForge MCP Gateway is affected by an improper access control vulnerability in co
CVE-2026-108290 4.0 MEDIUM IBM Cyber Fraud includes components with multiple known vulnerabilities
CVE-2026-5514 3.3 LOW IBM Bob is vulnerable to unauthorized session token exposure due to improper handling of a
CVE-2026-97683 2.5 LOW IBM Cyber Fraud includes components with multiple known vulnerabilities

IV. Related Vulnerabilities

Same product: ContextForge MCP Gateway
Same vendor: IBM
Same weakness: CWE-184