{"cve":"CVE-2021-29506","nvd":{"published":"2021-05-13T19:15:07.983","modified":"2026-06-17T03:47:47.707","status":"Modified","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","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-400"],"references":["https://github.com/graphhopper/graphhopper/commit/eb189be1fa7443ebf4ae881e737a18f818c95f41","https://github.com/graphhopper/graphhopper/pull/2304","https://github.com/graphhopper/graphhopper/security/advisories/GHSA-hf44-3mx6-vhhw","https://github.com/graphhopper/graphhopper/commit/eb189be1fa7443ebf4ae881e737a18f818c95f41","https://github.com/graphhopper/graphhopper/pull/2304"],"products":["graphhopper:graphhopper"],"source":"nvd","synced_at":"2026-10-19T21:18:09.669877188+00:00"},"epss":{"cve":"CVE-2021-29506","score":0.01404,"percentile":0.72564,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-hf44-3mx6-vhhw","url":"https://osv.dev/vulnerability/GHSA-hf44-3mx6-vhhw","summary":"Navigate endpoint is vulnerable to regex injection that may lead to Denial of Service.","modified":"2026-07-08T06:29:14.735965590Z","packages":[{"ecosystem":"Maven","name":"com.graphhopper:graphhopper-nav","purl":"pkg:maven/com.graphhopper/graphhopper-nav","ranges":["<2.4"],"fixed":["2.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}