CVE-2021-23408: Graphhopper

Medium severity, CVSS 4.3. EPSS: 1.4% chance of exploitation in the next 30 days.

This affects the package com.graphhopper:graphhopper-web-bundle before 3.2, from 4.0-pre1 and before 4.0. The URL parser could be tricked into adding or modifying properties of Object.prototype using a constructor or __proto__ payload.

Affected products

• Graphhopper Graphhopper: before 3.2 (fixed in 3.2); version 4.0 only

Published 2021-07-21. Last modified 2026-06-17.