CVE-2026-53711
MCP ContextForge: Global Prompts stored cross-site scripting compromises the Admin UI
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
MCP Context Forge provides an MCP Admin UI for managing gateway resources. From 0.2.0 until 0.3.1, the Global Prompts feature stores a prompt template without sufficient output encoding before the MCP Admin UI renders it. An authenticated attacker can save markup containing script-capable event handlers, and the code executes when another user views the saved prompt. The stored cross-site scripting can alter the interface, present phishing content, observe keystrokes available to the page, and act with the viewer's browser session. This issue is fixed in version 0.3.1.
| CWE | CWE-79 |
| Vendor | ibm |
| Product | mcp-context-forge |
| Published | Oct 13, 2026 |
| Last Updated | Oct 13, 2026 |
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Affected Versions
IBM / mcp-context-forge
>= 0.2.0, < 0.3.1
References
github.com: https://github.com/IBM/mcp-context-forge/security/advisories/GHSA-x6gc-rm5j-55mw github.com: https://github.com/IBM/mcp-context-forge/pull/337 github.com: https://github.com/IBM/mcp-context-forge/commit/acd16196158f9a393187551b21a2fc61650f2e3d github.com: https://github.com/IBM/mcp-context-forge/releases/tag/v0.3.1