Description
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.
Published: 2026-10-13
Score: 5.1 Medium
EPSS: n/a
KEV: No
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Remediation

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History

Tue, 13 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 13 Oct 2026 15:00:00 +0000

Type Values Removed Values Added
Description 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.
Title MCP ContextForge: Global Prompts stored cross-site scripting compromises the Admin UI
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-13T15:48:27.245Z

Reserved: 2026-06-10T16:43:31.241Z

Link: CVE-2026-53711

cve-icon Vulnrichment

Updated: 2026-10-13T15:47:52.618Z

cve-icon NVD

Status : Received

Published: 2026-10-13T15:17:45.030

Modified: 2026-10-13T16:17:21.167

Link: CVE-2026-53711

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses