CVE-2021-29506: Graphhopper

Medium severity, CVSS 6.5. EPSS: 1.4% chance of exploitation in the next 30 days.

GraphHopper is an open-source Java routing engine. In GrassHopper from version 2.0 and before version 2.4, there is a regular expression injection vulnerability that may lead to Denial of Service. This has been patched in 2.4 and 3.0 See this pull request for the fix: https://github.com/graphhopper/graphhopper/pull/2304

Affected products

• Graphhopper Graphhopper: from 2.0, before 2.4 (fixed in 2.4)

Published 2021-05-13. Last modified 2026-06-17.