CVE-2025-62800

MEDIUM

6.1

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung6.1

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionREQUIRED

Veroffentlicht10/28/2025

Zuletzt geandert11/7/2025

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

jlowin:fastmcp

Schwachen (CWE)

CWE-79

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

This product uses data from the NVD API but is not endorsed or certified by the NVD.