SSRF in Joecastrom Mcp-Chat-Studio
CVE-2026-7147
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (38.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Joecastrom Mcp-Chat-Studio — versions 1.0, 1.1, 1.2
Weakness classification (CWE)
References
- vuldb.com/vuln/359746 (technical-description, vdb-entry)
- vuldb.com/vuln/359746/cti (signature, permissions-required)
- vuldb.com/submit/801896 (third-party-advisory)
- github.com/JoeCastrom/mcp-chat-studio/issues/4 (issue-tracking, exploit)
- github.com/JoeCastrom/mcp-chat-studio/ (product)
Frequently asked questions
- What is CVE-2026-7147?
- CVE-2026-7147 is a high-severity vulnerability in Joecastrom Mcp-Chat-Studio, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.3/10. Published 2026-04-27.
- How severe is CVE-2026-7147?
- High severity. CVSS v3 base score is 7.3 out of 10.