CVE-2021-29506: Navigate endpoint is vulnerable to regex injection that may lead to Denial of Service.

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-05-13 · updated 2026-06-17
Weakness: CWE-400

Description

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

com.graphhopper:graphhopper-web-bundle: from 2.0 before 2.4 — fixed in 2.4

How to fix

Upgrade to a fixed version: com.graphhopper:graphhopper-web-bundle 2.4. Check the vendor advisory for mitigations.

References

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