What’s Vulnerable › Vulnerabilities

CVE-2026-7147: JoeCastrom mcp-chat-studio LLM Models API llm.js server-side request forgery

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-27 · updated 2026-10-26
• Weakness: CWE-918

Description

A vulnerability was detected in JoeCastrom mcp-chat-studio up to 1.5.0. Affected by this issue is some unknown functionality of the file server/routes/llm.js of the component LLM Models API. Performing a manipulation of the argument req.query.base_url results in server-side request forgery. Remote exploitation of the attack is possible. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

• JoeCastrom mcp-chat-studio: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5.0

References

• https://github.com/JoeCastrom/mcp-chat-studio/
• https://github.com/JoeCastrom/mcp-chat-studio/issues/4
• https://vuldb.com/submit/801896
• https://vuldb.com/vuln/359746
• https://vuldb.com/vuln/359746/cti

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