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.
https://github.com/graphhopper/graphhopper/releases/tag/3.2
https://github.com/graphhopper/graphhopper/releases/tag/3.1
https://github.com/graphhopper/graphhopper/pull/2370
https://snyk.io/vuln/SNYK-JAVA-COMGRAPHHOPPER-1320114
Source: Mitre, NVD
Published: 2021-07-21
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS: 0.00254