CVE-2025-62800

MEDIUM

6.1

Descricao

FastMCP is the standard framework for building MCP applications. Versions prior to 2.13.0 have a reflected cross-site scripting vulnerability in the OAuth client callback page (oauth_callback.py) where unescaped user-controlled values are inserted into the generated HTML, allowing arbitrary JavaScript execution in the callback server origin. The issue is fixed in version 2.13.0.

Detalhes CVE

Pontuacao CVSS v3.16.1

SeveridadeMEDIUM

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioREQUIRED

Publicado10/28/2025

Ultima modificacao11/7/2025

Fontenvd

Avistamentos honeypot0

Produtos afetados

jlowin:fastmcp

Fraquezas (CWE)

CWE-79

Referencias

https://github.com/jlowin/fastmcp/security/advisories/GHSA-mxxr-jv3v-6pgc(security-advisories@github.com)

https://github.com/jlowin/fastmcp/security/advisories/GHSA-mxxr-jv3v-6pgc(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlacoes IOC

Sem correlacoes registradas

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