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Security Bulletin: IBM ContextForge MCP Gateway is affected by a server-side request forgery vulnerability

Security Bulletin


Summary

IBM ContextForge MCP Gateway supports OAuth Dynamic Client Registration (RFC 7591), in which the gateway reads the registration endpoint from an authorization server's metadata document and sends client registration, update and delete requests to it. IBM ContextForge MCP Gateway is vulnerable to server-side request forgery (SSRF) because the endpoints taken from the authorization server metadata are not validated before the gateway sends requests to them, which could allow an authenticated user to cause the gateway to send requests to internal hosts.

Vulnerability Details

CVEID:   CVE-2026-110194
DESCRIPTION:   IBM MCP Context Forge is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks.
CWE:   CWE-918: Server-Side Request Forgery
CVSS Source:   IBM
CVSS Base score:   5.4
CVSS Vector:   (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)

Affected Products and Versions

 

Affected Product(s)Version(s)
IBM ContextForge MCP Gatewayv1.0.0 - v1.0.11

 

Remediation/Fixes

 

Product(s)Version(s) number and/or range Remediation/Fix/Instructions
IBM ContextForge MCP Gatewayv1.1.0Install or upgrade to v1.1.0 [v1.1.0 Release Notes]

 

  

Workarounds and Mitigations

IBM strongly recommends upgrading to the fixed version.
If this is not possible restrict the accepted authorization server issuers by setting `DCR_ALLOWED_ISSUERS` to a list of trusted issuers, or disable Dynamic Client Registration (`DCR_ENABLED=false`), and restrict gateway creation permissions to trusted users. 

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References

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Acknowledgement

Change History

13 Nov 2026: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
13 November 2026

Initial Publish date:
13 November 2026

UID

ibm17296696