IBM ContextForge MCP Gateway is affected by an information exposure vulnerability
Summary
| CVE | CVE-2026-110278 |
|---|---|
| State | PUBLISHED |
| Assigner | ibm |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-11-13 22:17:20 UTC |
| Updated | 2026-11-13 22:17:21 UTC |
| Description | IBM ContextForge MCP Gateway 1.0.0 through 1.1.0 could allow an attacker to replay identity propagation claims signatures or expose sensitive user identity information to third-party MCP servers due to static signature payloads and missing per-gateway configuration checks during tool invocation. |
Risk And Classification
Primary CVSS: v3.1 7.4 HIGH from [email protected]
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS: 0.002430000 probability, percentile 0.156610000 (date 2026-11-14)
Problem Types: CWE-294 | CWE-294 CWE-294 Authentication Bypass by Capture-replay
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 7.4 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| 3.1 | CNA | CVSS | 7.4 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | IBM | ContextForge MCP Gateway | affected 1.0.0 1.1.0 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.ibm.com/support/pages/node/7296489 | [email protected] | www.ibm.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: This vulnerability was reported to IBM by Wolfgang Kriesel. (en)
Additional Advisory Data
Solutions
CNA: IBM strongly recommends addressing the vulnerability now. Product(s)Version(s) number and/or range Remediation/Fix/InstructionsIBM ContextForge MCP Gateway v1.0.0-v1.1.0Upgrade to v1.1.1 immediately [ Release notes https://github.com/IBM/mcp-context-forge/releases/tag/v1.1.1 ]
Workarounds
CNA: IBM strongly recommends upgrading to the fixed version. If you cannot update disable identity propagation globally (set `IDENTITY_PROPAGATION_ENABLED=false`) so that no upstream MCP server receives user identity information, and restrict access to the gateway to trusted users.