CVE-2021-29506
Navigate endpoint is vulnerable to regex injection that may lead to Denial of Service.
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
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Navigate endpoint is vulnerable to regex injection that may lead to Denial of Service.
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
- Record
CVE-2021-29506- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
EUVDEUVD-2021-1100
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
- Record
EUVD-2021-1100- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hf44-3mx6-vhhw
Navigate endpoint is vulnerable to regex injection that may lead to Denial of Service.
Impact
The regex injection that may lead to Denial of Service.
Patches
Will be patched in 2.4 and 3.0
Workarounds
Versions lower than 2.x are only affected if the navigation module is added
References
See this pull request for the fix: https://github.com/graphhopper/graphhopper/pull/2304
If you have any questions or comments about this advisory please send us an Email or create a topic here.
- Record
GHSA-hf44-3mx6-vhhw- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
NVD
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
- Record
CVE-2021-29506- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:N/A:P - Weakness
- CWE-400
- Updated
- 2026-11-02
OSV
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
- Record
CVE-2021-29506- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-hf44-3mx6-vhhw
Navigate endpoint is vulnerable to regex injection that may lead to Denial of Service.
Impact
The regex injection that may lead to Denial of Service.
Patches
Will be patched in 2.4 and 3.0
Workarounds
Versions lower than 2.x are only affected if the navigation module is added
References
See this pull request for the fix: https://github.com/graphhopper/graphhopper/pull/2304
If you have any questions or comments about this advisory please send us an Email or create a topic here.
- Record
GHSA-hf44-3mx6-vhhw- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-400
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.graphhopper:graphhopper-navMaven |
before 2.4 | 2.4 |
com.graphhopper:graphhopper-navMaven |
before 2.4, plus listed versions 2.02.0-pre22.0-pre32.12.22.3client_hc_no_vehicle |
2.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-29506 is a medium vulnerability (CVSS 6.5) in Graphhopper, published May 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.40%, the 72nd percentile. Fixed in com.graphhopper:graphhopper-nav 2.4.